Changelog #1

Author: matklad

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+---
+layout: post
+title:  "Changelog #1"
+date:   2019-12-04 02:12:00 +0100
+redirect_from: "/2019/07/24/changelog-0.html"
+---
+
+Commit: [`c6e4cad`](https://github.com/rust-analyzer/rust-analyzer/commit/c6e4cadfce300d14dccdb74e3d5f0e44008e7985)
+
+## New Features
+
+* [`#2388`](https://github.com/rust-analyzer/rust-analyzer/pull/2388) added a more informative message for `missing fields` diagnostics.
+* [`#2445`](https://github.com/rust-analyzer/rust-analyzer/pull/2445) added type inference for range expressions.
+* [`#2018`](https://github.com/rust-analyzer/rust-analyzer/pull/2018) adds an initial version of **add custom impl** assist, which swtichs from a `#[derive]` to a manual impl.
+
+## Fixes
+
+* Update chalk to fix infinite memory usage in some cases.
+* [`#2406`](https://github.com/rust-analyzer/rust-analyzer/pull/2406) slightly better hygiene handling in macros.
+* [`#2453`](https://github.com/rust-analyzer/rust-analyzer/pull/2453) employed salsa's cycle-handling functionality to gracefully handle some error conditions instead of panicking.
+* [`#2455`](https://github.com/rust-analyzer/rust-analyzer/pull/2455) add required special-casing for name-resolution of primitive types.
+* [`#2463`](https://github.com/rust-analyzer/rust-analyzer/pull/2463) fixed method resolution order.
+
+## Internal Improvements
+
+* Extract `hir_ty` crate.
+* Separate compiler-internal `hir_ty::Ty` from IDE-visible `hir::Type`.
+  This should more flexible evolving of type representation.
+* Rename "the IDE" crate from `ra_ide_api` to `ra_ide`: at 14k lines, it has much more stuff than just an API.
+* A lot of assorted refactorings in the type inference area.