Add changelog.md

Author: Xanewok

changelog.md

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+# Changelog
+
+## [Unreleased]
+### Added
+- Allow to override or disable default crate blacklist via new `crate_blacklist` setting
+- Support both owned and borrowed blacklisted crate names in `rls-analysis`
+- Publicly re-export `rls_analysis::raw::Crate`
+### Changed
+- Converted remaining crates `rls-*` to 2018 edition
+### Removed
+- Removed `use_crate_blacklist` setting in favour of `crate_blacklist`
+## [Beta]
+### Changed
+- Fix spurious tests on slow disks by clearing `CARGO_TARGET_DIR` for tests
+- Document `RUSTC_SHIM_ENV_VAR_NAME` purpose
+- Disable `clear_env_rust_log` in CLI mode
+
+### Fixed
+- Fixed passing `--file-lines` to external Rustfmt for whole-file formatting requests ([#1497](https://github.com/rust-lang/rls/pull/1497))
+- Fixed RLS when used together with Cargo pipelined build feature ([#1500](https://github.com/rust-lang/rls/pull/1500))
+
+## [1.36.0]
+
+### Changed
+- Cleaned up and converted `rls-{analysis, span}` to 2018 edition
+- Made `rls-{analysis, span}` use `serde` instead of `rustc_serialize ` by default
+- Clarified how `clippy_preference` setting works in README
+
+### Removed
+- Removed support for obsolete `rustDocument/{beginBuild,diagnostics{Begin,End}}` LSP messages
+
+### Fixed
+- Fixed destructive formatting edits due to miscalculated newlines in diffs ([#1455](https://github.com/rust-lang/rls/pull/1455))
+
+[Unreleased]: https://github.com/rust-lang/rls/compare/beta...HEAD
+[Beta]: https://github.com/rust-lang/rls/compare/1.36.0...beta
+[1.36.0]: https://github.com/rust-lang/rls/compare/1.35.0...1.36.0