# Changelog 1.2

## [1.2.2] - 2021-11-10

[1.2.2]: https://github.com/crystal-lang/crystal/releases/1.2.2

### Compiler

- x86_64 ABI: pass structs indirectly if there are no more available registers ([#11344](https://github.com/crystal-lang/crystal/pull/11344), thanks @ggiraldez)
- Add parentheses around type name for metaclasses of unions ([#11315](https://github.com/crystal-lang/crystal/pull/11315), thanks @HertzDevil)
- **(regression)** Restrict virtual metaclasses to themselves against `Class` ([#11377](https://github.com/crystal-lang/crystal/pull/11377), thanks @HertzDevil)
- **(regression)** Add fallback for union debug type if current debug file is not set ([#11390](https://github.com/crystal-lang/crystal/pull/11390), thanks @maxfierke)
- **(regression)** Add missing debug locations to constant / class variable read calls ([#11417](https://github.com/crystal-lang/crystal/pull/11417), thanks @HertzDevil)

### Standard Library

#### Collection

- Fix `BitArray#toggle` when toggling empty subrange ([#11381](https://github.com/crystal-lang/crystal/pull/11381), thanks @HertzDevil)

#### Crypto

- Update for OpenSSL 3.0.0 ([#11360](https://github.com/crystal-lang/crystal/pull/11360), thanks @straight-shoota)
- Restore libressl support and add CI for that ([#11400](https://github.com/crystal-lang/crystal/pull/11400), thanks @straight-shoota)
- Replace lib version comparisons by functional feature checks ([#11374](https://github.com/crystal-lang/crystal/pull/11374), thanks @straight-shoota)

#### Runtime

- Add support for DWARF 5 ([#11399](https://github.com/crystal-lang/crystal/pull/11399), thanks @straight-shoota)
- Retrieve filename of shared libs, use in stacktraces ([#11408](https://github.com/crystal-lang/crystal/pull/11408), thanks @rdp)

### Other

- [CI] Fix enable nix-command as experimental feature ([#11398](https://github.com/crystal-lang/crystal/pull/11398), thanks @straight-shoota)
- [CI] Fix OpenSSL 3 apk package name ([#11418](https://github.com/crystal-lang/crystal/pull/11418), thanks @straight-shoota)
- Update distribution-scripts ([#11404](https://github.com/crystal-lang/crystal/pull/11404), thanks @straight-shoota)
- [CI] Fix pcre download URL ([#11422](https://github.com/crystal-lang/crystal/pull/11422), thanks @straight-shoota)

## [1.2.1] - 2021-10-21

[1.2.1]: https://github.com/crystal-lang/crystal/releases/1.2.1

### Compiler

- Adding location to the Path returned by the literal expander for regex ([#11334](https://github.com/crystal-lang/crystal/pull/11334), thanks @beta-ziliani)

### Standard Library

- Add support for LLVM 13 ([#11302](https://github.com/crystal-lang/crystal/pull/11302), thanks @maxfierke)

#### Runtime

- Move the `:nodoc:` flags to the right place to hide the `__mul*` functions. ([#11326](https://github.com/crystal-lang/crystal/pull/11326), thanks @wyhaines)

### Tools

- Update markd subtree to v0.4.2 ([#11338](https://github.com/crystal-lang/crystal/pull/11338), thanks @straight-shoota)

## [1.2.0] - 2021-10-13

[1.2.0]: https://github.com/crystal-lang/crystal/releases/1.2.0

### Compiler

- Fix variance checks between generic instances for `Proc#call` and abstract defs. ([#10899](https://github.com/crystal-lang/crystal/pull/10899), thanks @HertzDevil)
- Fix `proc_spec` forcing normal compilation instead of JIT ([#10964](https://github.com/crystal-lang/crystal/pull/10964), thanks @straight-shoota)
- Fix `ProcNotation#to_s` remove whitespace for nil output type ([#10935](https://github.com/crystal-lang/crystal/pull/10935), thanks @straight-shoota)
- Compiler: carry FileModule information inside Block ([#11039](https://github.com/crystal-lang/crystal/pull/11039), thanks @asterite)
- Splat values correctly inside return/break/next statements ([#10193](https://github.com/crystal-lang/crystal/pull/10193), thanks @HertzDevil)
- Handle already stripped column numbers in compiler exceptions ([#11008](https://github.com/crystal-lang/crystal/pull/11008), thanks @pyrsmk)
- Substitute unbound type parameters in virtual metaclass types ([#11067](https://github.com/crystal-lang/crystal/pull/11067), thanks @HertzDevil)
- Improve detection of instance variables in extended modules ([#10554](https://github.com/crystal-lang/crystal/pull/10554), thanks @HertzDevil)
- Don't compute instance variable initializers on unbound generic instances ([#11000](https://github.com/crystal-lang/crystal/pull/11000), thanks @HertzDevil)
- Syntax errors for invalid 128-bit integer literals ([#10975](https://github.com/crystal-lang/crystal/pull/10975), thanks @rymiel)
- Support auto-splatting in captured block literals ([#10251](https://github.com/crystal-lang/crystal/pull/10251), thanks @HertzDevil)
- Detect cyclic includes between generic modules ([#10529](https://github.com/crystal-lang/crystal/pull/10529), thanks @HertzDevil)
- Add stricter checks for arguments to macro methods on AST nodes ([#10498](https://github.com/crystal-lang/crystal/pull/10498), thanks @HertzDevil)
- Compiler: fix `is_a?` for virtual metaclass types ([#11121](https://github.com/crystal-lang/crystal/pull/11121), thanks @asterite)
- Fix edge cases with unicode method names ([#10978](https://github.com/crystal-lang/crystal/pull/10978), thanks @HertzDevil)
- Don't emit debug info for unused variable declarations ([#10957](https://github.com/crystal-lang/crystal/pull/10957), thanks @HertzDevil)
- Fix `Call.def_full_name` print full block parameter ([#10915](https://github.com/crystal-lang/crystal/pull/10915), thanks @straight-shoota)
- Allow union types to be unbound ([#11166](https://github.com/crystal-lang/crystal/pull/11166), thanks @HertzDevil)
- Make `typeof` start a nested lexical scope ([#10796](https://github.com/crystal-lang/crystal/pull/10796), thanks @HertzDevil)
- Fix edge case for intersection between virtual metaclasses ([#11185](https://github.com/crystal-lang/crystal/pull/11185), thanks @HertzDevil)
- Compiler: don't trigger "already had enclosing call" for same object ([#11202](https://github.com/crystal-lang/crystal/pull/11202), thanks @asterite)
- Properly handle indirect arguments for external C functions ([#11189](https://github.com/crystal-lang/crystal/pull/11189), thanks @ggiraldez)
- Fix resolve generic argument in block output type restriction mismatch ([#11186](https://github.com/crystal-lang/crystal/pull/11186), thanks @straight-shoota)
- Secure array slicing when expanding macro for stack trace ([#11109](https://github.com/crystal-lang/crystal/pull/11109), thanks @pyrsmk)
- Fix debug locations for `Proc` pointers ([#11243](https://github.com/crystal-lang/crystal/pull/11243), thanks @HertzDevil)
- Allow assignments from generic instance metaclasses to virtual metaclasses ([#11250](https://github.com/crystal-lang/crystal/pull/11250), thanks @HertzDevil)
- Refactor `CrystalPath#find_in_path_relative_to_dir` for readability ([#10876](https://github.com/crystal-lang/crystal/pull/10876), [#10990](https://github.com/crystal-lang/crystal/pull/10990), [#10988](https://github.com/crystal-lang/crystal/pull/10988), thanks @straight-shoota)
- Allow constants and instance / class variables as receivers for setter proc pointers ([#10741](https://github.com/crystal-lang/crystal/pull/10741), thanks @HertzDevil)
- Do not use globals for regex ([#10951](https://github.com/crystal-lang/crystal/pull/10951), thanks @asterite)
- Define type filtering through an intersection operation ([#10781](https://github.com/crystal-lang/crystal/pull/10781), thanks @HertzDevil)
- Fix no overflow check when primitive int converts to same type ([#11003](https://github.com/crystal-lang/crystal/pull/11003), thanks @HertzDevil)
- Attach debug locations to generated internal LLVM functions ([#10934](https://github.com/crystal-lang/crystal/pull/10934), thanks @HertzDevil)
- Add helpful error message for invalid number literal like '.42' ([#4665](https://github.com/crystal-lang/crystal/pull/4665), thanks @MakeNowJust)
- Add `CrystalPath.expand_paths`, expand relative to compiler path ([#11030](https://github.com/crystal-lang/crystal/pull/11030), thanks @straight-shoota)
- Clarify usage of "arguments" and "parameters" in error messages ([#10378](https://github.com/crystal-lang/crystal/pull/10378), thanks @HertzDevil)
- **(performance)** Don't generate type IDs for formal generic instances ([#11167](https://github.com/crystal-lang/crystal/pull/11167), thanks @HertzDevil)
- **(performance)** Don't generate unique type IDs for virtual metaclasses ([#11188](https://github.com/crystal-lang/crystal/pull/11188), thanks @HertzDevil)
- Add an environment variable for dumping type IDs ([#11168](https://github.com/crystal-lang/crystal/pull/11168), thanks @HertzDevil)
- Allow underscores in macro `for`'s loop variables ([#11141](https://github.com/crystal-lang/crystal/pull/11141), thanks @HertzDevil)
- **(performance)** Compiler: cache cleanup transformer ([#11197](https://github.com/crystal-lang/crystal/pull/11197), thanks @asterite)
- Avoid needless union in `LLVM::ABI::AArch64#homogeneous_aggregate?` ([#11199](https://github.com/crystal-lang/crystal/pull/11199), thanks @asterite)
- Removing ThinLTO support ([#11194](https://github.com/crystal-lang/crystal/pull/11194), thanks @beta-ziliani)
- Error if abstract def implementation is inherited from supertype ([#11056](https://github.com/crystal-lang/crystal/pull/11056), thanks @straight-shoota)
- **(performance)** Add `inject_primitives: false` to macro_spec ([#11269](https://github.com/crystal-lang/crystal/pull/11269), thanks @straight-shoota)
- Primitive annotations for interpreter ([#11147](https://github.com/crystal-lang/crystal/pull/11147), thanks @asterite)
- Support generic module instances in `TypeNode#includers` ([#11116](https://github.com/crystal-lang/crystal/pull/11116), thanks @HertzDevil)
- Reject hash literals with mixed syntax ([#11154](https://github.com/crystal-lang/crystal/pull/11154), thanks @MakeNowJust)

### Language

- Make `.as?(NoReturn)` always return `nil` ([#10896](https://github.com/crystal-lang/crystal/pull/10896), thanks @HertzDevil)
- Compiler: make `is_a?(union)` work correctly for virtual types ([#11176](https://github.com/crystal-lang/crystal/pull/11176), thanks @asterite)
- Adjust docs for `Crystal::Macros::HashLiteral#[]` ([#10930](https://github.com/crystal-lang/crystal/pull/10930), thanks @kevinsjoberg)
- Fix path lookup when ancestor finds type with same name as current scope ([#10901](https://github.com/crystal-lang/crystal/pull/10901), thanks @HertzDevil)
- Fix several compile-time operations on generic instance metaclasses ([#11101](https://github.com/crystal-lang/crystal/pull/11101), thanks @HertzDevil)
- Make `#is_a?` in macros respect the AST node hierarchy ([#11062](https://github.com/crystal-lang/crystal/pull/11062), thanks @HertzDevil)
- Add docs to string methods in `SymbolLiteral` and `MacroId` ([#9298](https://github.com/crystal-lang/crystal/pull/9298), thanks @MakeNowJust)
- Add clarification about when `instance_vars` can be called ([#11171](https://github.com/crystal-lang/crystal/pull/11171), thanks @willhbr)
- Add `file_exists?` macro method ([#10540](https://github.com/crystal-lang/crystal/pull/10540), thanks @Sija)

### Standard Library

- **(breaking-change)** Change nonsense return types to Nil: uncategorized ([#10625](https://github.com/crystal-lang/crystal/pull/10625), thanks @oprypin)
- **(breaking-change)** Change nonsense return types to Nil in formatter classes ([#10623](https://github.com/crystal-lang/crystal/pull/10623), thanks @oprypin)
- Add base64 to prelude ([#11050](https://github.com/crystal-lang/crystal/pull/11050), thanks @straight-shoota)
- Remove calls to deprecated `SystemError.from_winerror` ([#11220](https://github.com/crystal-lang/crystal/pull/11220), thanks @straight-shoota)
- Add support for LLVM 12 ([#10873](https://github.com/crystal-lang/crystal/pull/10873), [#11178](https://github.com/crystal-lang/crystal/pull/11178), thanks @maxfierke, @Blacksmoke16)
- Examples: fix (2021-09) ([#11234](https://github.com/crystal-lang/crystal/pull/11234), thanks @maiha)
- Don't use `:nodoc:` when overriding public methods ([#11096](https://github.com/crystal-lang/crystal/pull/11096), thanks @HertzDevil)
- Add internal registry implementation for win32 ([#11137](https://github.com/crystal-lang/crystal/pull/11137), thanks @straight-shoota)

#### Collection

- **(breaking-change)** Move `Array#product` to `Indexable#cartesian_product` ([#10013](https://github.com/crystal-lang/crystal/pull/10013), thanks @HertzDevil)
- Disallow `Slice(T).new(Int)` where `T` is a union of primitive number types ([#10982](https://github.com/crystal-lang/crystal/pull/10982), thanks @HertzDevil)
- Make `Array#transpose`, `Enumerable#reject`, `Enumerable#to_h` work with tuples ([#10445](https://github.com/crystal-lang/crystal/pull/10445), thanks @HertzDevil)
- Fix `Enumerable#each` block return type ([#10928](https://github.com/crystal-lang/crystal/pull/10928), thanks @straight-shoota)
- Fix key type for empty `NamedTuple` be `Symbol` ([#10942](https://github.com/crystal-lang/crystal/pull/10942), thanks @caspiano)
- Fix overflow in `BitArray#[](Int, Int)` for sizes between 33 and 64 ([#10809](https://github.com/crystal-lang/crystal/pull/10809), thanks @HertzDevil)
- Fix `Range#step` for non-integer `Steppable` types ([#11130](https://github.com/crystal-lang/crystal/pull/11130), thanks @straight-shoota)
- **(performance)** Construct an array literal in `NamedTuple#map` ([#10950](https://github.com/crystal-lang/crystal/pull/10950), thanks @caspiano)
- Add `Slice#fill` ([#10924](https://github.com/crystal-lang/crystal/pull/10924), thanks @HertzDevil)
- Add range overloads for `BitArray#toggle` ([#10743](https://github.com/crystal-lang/crystal/pull/10743), thanks @HertzDevil)
- Add stable sort implementation to `Slice`, `Array` and `Indexable::Mutable` ([#10163](https://github.com/crystal-lang/crystal/pull/10163), [#11029](https://github.com/crystal-lang/crystal/pull/11029), [#11254](https://github.com/crystal-lang/crystal/pull/11254), thanks @MakeNowJust, thanks @straight-shoota)
- Allow `Enumerable(T)#reduce`'s return type to differ from `T` ([#11065](https://github.com/crystal-lang/crystal/pull/11065), thanks @HertzDevil)
- Implement `Enumerable#tally_by` ([#10922](https://github.com/crystal-lang/crystal/pull/10922), thanks @caspiano)
- Add the `Indexable::Mutable(T)` module ([#11059](https://github.com/crystal-lang/crystal/pull/11059), thanks @HertzDevil)
- Remove restriction of bsearch block output type ([#11212](https://github.com/crystal-lang/crystal/pull/11212), thanks @straight-shoota)
- Add and improve type restrictions of block arguments ([#10467](https://github.com/crystal-lang/crystal/pull/10467), [#11246](https://github.com/crystal-lang/crystal/pull/11246), [#11267](https://github.com/crystal-lang/crystal/pull/11267, [#11308](https://github.com/crystal-lang/crystal/pull/11308), thanks @caspiano, thanks @straight-shoota, thanks @HertzDevil, thanks @beta-ziliani, thanks @caspiano)
- **(performance)** Optimize `#rotate!` ([#11198](https://github.com/crystal-lang/crystal/pull/11198), thanks @HertzDevil)

#### Concurrency

- Fix Documentation of `Fiber.timeout` ([#11271](https://github.com/crystal-lang/crystal/pull/11271), thanks @toddsundsted)
- **(performance)** `Scheduler#reschedule`: Shortcut lookup for current fiber. ([#11156](https://github.com/crystal-lang/crystal/pull/11156), thanks @yxhuvud)
- Add sleep support to win32 event loop ([#10605](https://github.com/crystal-lang/crystal/pull/10605), thanks @straight-shoota)

#### Files

- **(breaking-change)** Change nonsense return types to Nil in IO-related methods ([#10621](https://github.com/crystal-lang/crystal/pull/10621), thanks @oprypin)
- Fix `File.match?` to accept `Path` type as `path` argument ([#11075](https://github.com/crystal-lang/crystal/pull/11075), thanks @fishnibble)
- Add `FileUtils` method specs with `String` and `Path` arguments ([#10987](https://github.com/crystal-lang/crystal/pull/10987), thanks @straight-shoota)
- Make `IO#read_char`'s default behaviour UTF-8-strict ([#10446](https://github.com/crystal-lang/crystal/pull/10446), thanks @HertzDevil)
- Fix glob with multiple recurse patterns ([#10813](https://github.com/crystal-lang/crystal/pull/10813), thanks @straight-shoota)
- IO: fix bug in `gets` without peek involving `\r` and limit ([#11241](https://github.com/crystal-lang/crystal/pull/11241), thanks @asterite)
- Make `FileUtils.mv` work across filesystems ([#10783](https://github.com/crystal-lang/crystal/pull/10783), thanks @naqvis)
- **(performance)** Improve performance of `Path#dirname` and `Path#extension` ([#11001](https://github.com/crystal-lang/crystal/pull/11001), thanks @BlobCodes)

#### Networking

- **(breaking-change)** Change nonsense return types to `Nil` in HTTP-related methods and `Log` ([#10624](https://github.com/crystal-lang/crystal/pull/10624), thanks @oprypin)
- Fix trailing `rescue` syntax ([#11083](https://github.com/crystal-lang/crystal/pull/11083), thanks @straight-shoota)
- Fix spec for `HTTP::Params` can't run on its own ([#11128](https://github.com/crystal-lang/crystal/pull/11128), thanks @asterite)
- Fix parsing cookie `Domain` attribute with leading dot ([#11098](https://github.com/crystal-lang/crystal/pull/11098), thanks @mamantoha)
- Rescue `OpenSSL::SSL::Error` in `HTTP::Server#handle_client` ([#11146](https://github.com/crystal-lang/crystal/pull/11146), thanks @straight-shoota)
- Fix `TCPSocket` constructors ([#11049](https://github.com/crystal-lang/crystal/pull/11049), thanks @straight-shoota)
- Support basic auth from `URI` in websockets ([#10854](https://github.com/crystal-lang/crystal/pull/10854), thanks @willhbr)
- Tag std specs that need network access ([#11048](https://github.com/crystal-lang/crystal/pull/11048), thanks @toshokan)
- Proper handling of `max-age` and `expires` for cookies ([#10564](https://github.com/crystal-lang/crystal/pull/10564), thanks @straight-shoota, @watzon)
- Retry `HTTP::Client` requests once if io is closed ([#11088](https://github.com/crystal-lang/crystal/pull/11088), thanks @carlhoerberg)
- Implement `Socket` for win32 ([#10784](https://github.com/crystal-lang/crystal/pull/10784), thanks @straight-shoota)
- Add `URI.encode_path` and deprecate `URI.encode` ([#11248](https://github.com/crystal-lang/crystal/pull/11248), thanks @straight-shoota)

#### Numeric

- **(breaking-change)** Refine type restriction of `Math.frexp(BigFloat)` ([#10998](https://github.com/crystal-lang/crystal/pull/10998), thanks @straight-shoota)
- Fix `BigInt#to_s` emitting null bytes for certain values ([#11063](https://github.com/crystal-lang/crystal/pull/11063), thanks @HertzDevil)
- Fix `Float#humanize` for values outside `1e-4...1e15` ([#10881](https://github.com/crystal-lang/crystal/pull/10881), thanks @straight-shoota)
- Add type restrictions and fix return types of `BigFloat#to_x` methods ([#10996](https://github.com/crystal-lang/crystal/pull/10996), thanks @straight-shoota)
- Add integer square root ([#10549](https://github.com/crystal-lang/crystal/pull/10549), thanks @kimburgess)
- Add negative exponential support to BigDecimal ([#10892](https://github.com/crystal-lang/crystal/pull/10892), thanks @stakach)
- Add `#next_float` and `#prev_float` to `Float32` and `Float64` ([#10908](https://github.com/crystal-lang/crystal/pull/10908), thanks @HertzDevil)
- Add precision parameter to `Int#to_s` ([#10926](https://github.com/crystal-lang/crystal/pull/10926), thanks @HertzDevil)
- **(performance)** Improve Int parsing performance ([#11093](https://github.com/crystal-lang/crystal/pull/11093), thanks @BlobCodes)
- Implement `Int128` compiler-rt methods ([#11206](https://github.com/crystal-lang/crystal/pull/11206), thanks @BlobCodes)
- Fix `BigDecimal` operations with floats ([#10874](https://github.com/crystal-lang/crystal/pull/10874), thanks @stakach)
- Add `String#to_(u/i)128(?)` methods ([#11245](https://github.com/crystal-lang/crystal/pull/11245), thanks @BlobCodes)

#### Runtime

- Extract `libunwind` from callstack ([#11205](https://github.com/crystal-lang/crystal/pull/11205), thanks @straight-shoota)

#### Serialization

- **(breaking-change)** Change nonsense return types to `Nil`: JSON and YAML ([#10622](https://github.com/crystal-lang/crystal/pull/10622), thanks @oprypin)
- **(breaking-change)** Add type restriction and conversion to `YAML::PullParser#location` ([#10997](https://github.com/crystal-lang/crystal/pull/10997), thanks @straight-shoota)
- Allow EOF IO passed to `JSON::PullParser.new` ([#10864](https://github.com/crystal-lang/crystal/pull/10864), thanks @Blacksmoke16)
- Quote the named tuple's keys on deserialization ([#10919](https://github.com/crystal-lang/crystal/pull/10919), thanks @Blacksmoke16)
- Refactor `JSON::PullParser#consume_number` to use stdlib number parsing ([#10447](https://github.com/crystal-lang/crystal/pull/10447), thanks @straight-shoota)
- XML Namespace improvements ([#11072](https://github.com/crystal-lang/crystal/pull/11072), thanks @Blacksmoke16)
- Add JSON/YAML serialization to `URI` ([#10404](https://github.com/crystal-lang/crystal/pull/10404), thanks @straight-shoota)

#### Specs

- Add missing require in `iterator_spec` ([#11148](https://github.com/crystal-lang/crystal/pull/11148), thanks @asterite)
- Add missing requires to run a couple of specs standalone ([#11152](https://github.com/crystal-lang/crystal/pull/11152), thanks @asterite)
- Allow `describe` without requiring an argument ([#10974](https://github.com/crystal-lang/crystal/pull/10974), thanks @straight-shoota)

#### System

- SystemError: Fix inconsistent signature. ([#11002](https://github.com/crystal-lang/crystal/pull/11002), thanks @yxhuvud)

#### Text

- **(breaking-change)** Deprecate `String#unsafe_byte_at` ([#10559](https://github.com/crystal-lang/crystal/pull/10559), thanks @straight-shoota)
- **(breaking-change)** Rename `IO#write_utf8` to `#write_string`. ([#11051](https://github.com/crystal-lang/crystal/pull/11051), thanks @straight-shoota)
- Use `#write_string` instead of `#write` whenever writing strings to unknown `IO`s ([#11011](https://github.com/crystal-lang/crystal/pull/11011), thanks @HertzDevil)
- Don't use `#write_byte` whenever writing ASCII characters to unknown `IO`s ([#11124](https://github.com/crystal-lang/crystal/pull/11124), thanks @HertzDevil)
- Make `Int#chr` reject surrogate halves ([#10451](https://github.com/crystal-lang/crystal/pull/10451), thanks @HertzDevil)
- CSV: don't eagerly check next char after newline ([#11174](https://github.com/crystal-lang/crystal/pull/11174), thanks @asterite)
- Fix link on regex.cr ([#11204](https://github.com/crystal-lang/crystal/pull/11204), thanks @gemmaro)
- Disallow non-UTF-8 encoding settings for `String::Builder` ([#11025](https://github.com/crystal-lang/crystal/pull/11025), thanks @HertzDevil)
- Unicode: update to version 14.0.0 ([#11215](https://github.com/crystal-lang/crystal/pull/11215), thanks @Blacksmoke16)

### Tools

- Formatter: Handle `(-> )` correctly ([#10945](https://github.com/crystal-lang/crystal/pull/10945), thanks @HertzDevil)
- Use [markd](https://github.com/icyleaf/markd) for markdown rendering in the compiler ([#11040](https://github.com/crystal-lang/crystal/pull/11040), thanks @straight-shoota)
- Formatter: Handle leading tuple literals in multi-expression `return`/`break`/`next` properly ([#10597](https://github.com/crystal-lang/crystal/pull/10597), thanks @HertzDevil)
- Include parent headings in anchor links ([#9839](https://github.com/crystal-lang/crystal/pull/9839), thanks @Blacksmoke16)
- Fix formatting nested multiline array and tuple ([#11153](https://github.com/crystal-lang/crystal/pull/11153), thanks @MakeNowJust)
- `crystal init`: Improve transformation of project name with hyphens ([#11170](https://github.com/crystal-lang/crystal/pull/11170), thanks @Kanezoh)
- Fix formatting generic types with suffix ([#11187](https://github.com/crystal-lang/crystal/pull/11187), thanks @MakeNowJust)
- Make `WARNING` an admonition keyword ([#10898](https://github.com/crystal-lang/crystal/pull/10898), thanks @HertzDevil)
- Refactor hierarchy printers ([#10791](https://github.com/crystal-lang/crystal/pull/10791), thanks @HertzDevil)

### Other

- Fix typos ([#11045](https://github.com/crystal-lang/crystal/pull/11045), [#11163](https://github.com/crystal-lang/crystal/pull/11163), [#11138](https://github.com/crystal-lang/crystal/pull/11138), hanks @toshokan, thanks @MakeNowJust, thanks @schmijos)
- Update readme to point to IRC channel on libera.chat ([#11024](https://github.com/crystal-lang/crystal/pull/11024), thanks @jhass)
- [CI] Update ruby-install ([#11276](https://github.com/crystal-lang/crystal/pull/11276), thanks @straight-shoota)
- [CI] Remove `test_linux_32` and add smoke test for 32-bit gnu ([#11127](https://github.com/crystal-lang/crystal/pull/11127), thanks @straight-shoota)
- [CI] Remove obsolete `package_build` workflow ([#11240](https://github.com/crystal-lang/crystal/pull/11240), thanks @straight-shoota)
- [CI] Add build matrix with 1.0.0 and 1.1.1 ([#11278](https://github.com/crystal-lang/crystal/pull/11278), thanks @straight-shoota)
- [CI] Update aarch64.yml ([#11160](https://github.com/crystal-lang/crystal/pull/11160), thanks @beta-ziliani)
- [CI] Update distribution-scripts (universal darwin & demote alpine to 3.12)  ([#11228](https://github.com/crystal-lang/crystal/pull/11228), thanks @bcardiff)
- Update shards 0.16.0 ([#11292](https://github.com/crystal-lang/crystal/pull/11292), thanks @straight-shoota)
- Update previous release Crystal 1.1.0 ([#10955](https://github.com/crystal-lang/crystal/pull/10955), thanks @straight-shoota)
- Merge changelog entry for 1.1.1 ([#11028](https://github.com/crystal-lang/crystal/pull/11028), thanks @straight-shoota)
- Update previous release Crystal 1.1.1 ([#11053](https://github.com/crystal-lang/crystal/pull/11053), thanks @straight-shoota)
- PR template ([#10894](https://github.com/crystal-lang/crystal/pull/10894), thanks @beta-ziliani)
- Add github-changelog script ([#11155](https://github.com/crystal-lang/crystal/pull/11155), thanks @straight-shoota)
- Add `make install` ([#10878](https://github.com/crystal-lang/crystal/pull/10878), thanks @straight-shoota)
- [CI] Sanitize version from branch name ([#11294](https://github.com/crystal-lang/crystal/pull/11294), thanks @straight-shoota)
- Update libgc to 8.2.0 ([#11293](https://github.com/crystal-lang/crystal/pull/11293), thanks @straight-shoota)
- [CI] Unify `maintenance_release` and `tagged_release` workflows ([#11273](https://github.com/crystal-lang/crystal/pull/11273), thanks @straight-shoota)
- [CI] Update distribution-scripts (make install) ([#11307](https://github.com/crystal-lang/crystal/pull/11307), thanks @straight-shoota)
- [CI] Enable publish docker images on tagged release ([#11309](https://github.com/crystal-lang/crystal/pull/11309), thanks @straight-shoota)
- [CI] Update distribution-scripts (fix for libgc in alpine Docker image) ([#11310](https://github.com/crystal-lang/crystal/pull/11310), thanks @straight-shoota)
- [CI] Pin macOS runner to 10.15 ([#11282](https://github.com/crystal-lang/crystal/pull/11282), thanks @straight-shoota)
- [CI] Fix `push_obs_nightly` ([#11301](https://github.com/crystal-lang/crystal/pull/11301), thanks @straight-shoota)
- [CI] Update distribution-scripts ([#11285](https://github.com/crystal-lang/crystal/pull/11285), thanks @straight-shoota)
- [CI] Remove i386 builds ([#11287](https://github.com/crystal-lang/crystal/pull/11287), thanks @straight-shoota)