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<a name="v0.13.0"></a> ## v0.13.0 (2019-10-27) #### Performance * Only do one hash lookup when creating a Symbol ([a709c71](a709c71)) * Shrink Type's size to 48 bytes (from 64) ([178180f](178180f)) * Avoid RefCell in Fixed* structurs (-1%) ([de32dbd](de32dbd)) * Avoid recursion in implicits.rs ([89eb836](89eb836)) * Only mark types with unbound generics as HAS_GENERICS ([3d835a8](3d835a8)) * Avoid computing the plain name in name_eq (-3%) ([a7ac9f8](a7ac9f8)) * **check:** * Use RefCell::get_mut when possible ([1244143](1244143)) * Remove redundant operations in union ([f3d4203](f3d4203)) * No need to lookup the type again before querying the level ([5e4efe3](5e4efe3)) * Remove some branches in the occurs check¨ ([03e7c3b](03e7c3b)) * Only initialize the variable generator when it is necessary (-3%) ([793b658](793b658)) * Only do one lookup/insertion on the implicit definition map ([0ea13ff](0ea13ff)) * Narrow down the implicit parititioning further (-10%) ([a9c965b](a9c965b)) * Avoid looking through metadata when checking for an implicit type ([4a3662e](4a3662e)) * Only add implicit fields if the binding is implicit ([da861eb](da861eb), breaks [#](https://github.com/gluon-lang/gluon/issues/)) * **optimize:** Allocate core syntax directly into arenas ([723ec4d](723ec4d)) * **parser:** * Shrink the Token type and remove it's need to Drop ([3016f25](3016f25)) * Simplify tokenization iterators ([c7061c7](c7061c7)) * **vm:** * Add function inlining ([5093137](5093137)) * Eliminate redundant match expressions ([945fb83](945fb83)) * Implement inter-module dead code elimination ([ab1b1b8](ab1b1b8)) * Avoid tracing global values unless we are in the root gc (-7%) ([48a5313](48a5313)) * Avoid the bounds check when fetching instructions ([c2778e7](c2778e7)) * Faster updates to the stack frame ([2b94a3a](2b94a3a)) * Cache the frame offset for the stack (-20%) ([0469cb2](0469cb2)) * Copy instead of clone unrooted gc values ([a0396f4](a0396f4)) #### Breaking Changes * Replace Compiler with the ThreadExt trait ([c16132e](c16132e), breaks [#](https://github.com/gluon-lang/gluon/issues/)) * **check:** Only add implicit fields if the binding is implicit ([da861eb](da861eb), breaks [#](https://github.com/gluon-lang/gluon/issues/)) #### Bug Fixes * Don't leak implicit bindings into adjacent scopes ([5681ffc](5681ffc), closes [#783](#783)) * ignore formatting in std.test due to a bug ([bdccee6](bdccee6)) * rerefix formatting ([3116616](3116616)) * refix formatting ([fcb7f0b](fcb7f0b)) * fix formatting and apply naming suggesions ([6bb0d87](6bb0d87)) * Make the behaviour consistent for `Show Char` ([0ff8987](0ff8987)) * Avoid infinite loops/extremely slow optimization ([dc7ec72](dc7ec72)) * Expand macros inside macros ([5a29433](5a29433)) * Invalidate text properly so rexpect tests work ([92e4508](92e4508)) * Don't depend on ansi_term in windows to make windows 7 work ([58e2a8b](58e2a8b), closes [#777](#777)) * Add tests and fix the regression with clone_userdata ([df07872](df07872)) * Ensure that threads are dropped when using child threads ([b9efb51](b9efb51)) * **check:** Handle aliases better in `do` ([770e52e](770e52e), closes [#766](#766)) * **repl:** make the REPL respect --no-std ([e797470](e797470)) * **std:** export missing assertions in std.test ([41f4fc5](41f4fc5)) * **vm:** * Don't (rust) panic in string.split_at ([50f937b](50f937b), closes [#757](#757)) * Accept trailing comma in record macros ([f35c0b9](f35c0b9), closes [#770](#770)) #### Features * Use implicit Monoids in std.foldable ([295b8c3](295b8c3)) * Add a mutable string type to the ST monad ([9ec946b](9ec946b)) * Allow attributes to be specified on fields inside types ([fb35db5](fb35db5)) * Provide std.effect.io as a mirror of std.io ([66e49b3](66e49b3)) * Replace Compiler with the ThreadExt trait ([c16132e](c16132e), breaks [#](https://github.com/gluon-lang/gluon/issues/)) * Use salsa for incremental compilation ([7bc8253](7bc8253)) * Add history hints and bracket highlight to the REPL ([10ef8cd](10ef8cd)) * Use line/column numbers in lambda names ([201fdfb](201fdfb)) * **codegen:** Map Rust's struct enums to records in Gluon. ([afb682e](afb682e)) * **repl:** add --no-std option to gluon.exe ([f2c1819](f2c1819)) * **std:** * add ordering assertions ([3efac99](3efac99)) * add a few functions to std.test & std.effect.error ([58e0043](58e0043)) * **vm:** Make macro errors implement PartialEq, Eq, Hash and Clone ([039825a](039825a))
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