1.8
- Added Unity 6 support
- Improved extension methods rewriting
- Partial classes support (contributed by Jlabarca)
- Unity 2019 / 2020 no longer officially supported

1.7
- Optional file watching can be done via direct WindowsAPI (contributed by SamPruden)
- Extended UI to allow for easy choice of file watcher implementation

1.6
- Added more Unit Tests to ensure various code patterns can be rewritten correctly
- Added Watch Only Specific Files and Folders mode (contributed by GhatSmith)
- Added better Odin support for dynamically added fields (contributed by GhatSmith)
- Updated Roslyn lib version to 4.6.0 for better code parsing (contributed by SamPruden)
- Improved error handling for code parsing (contributed by SamPruden)
- Added Custom-File-Watcher implementation (for cases where standard FileWatcher API is causing issues) (contributed by D0rkKnight)

1.5
- you can now import FSR as a package from github page
- hot-reloading internal interfaces / classes would no longer cause compilation error
- OnScriptHotReload method can be added at runtime
- builder functions will be correctly rewritten
- hot reload status (red / green) will be visible in project panel next to changed script
- compilation error reporting will be much improved, project panel will allow to click error next to actual file for more details and workarounds
- all type declarations that were appended with __Patched_ postfix to avoid name collisions will also have all corresponding identifiers changed
- OnScriptHotReload methods will also be called in editor-workflow

1.4
- added experimental editor-mode hot-reload, you'll need to opt in via Start Screen -> Editor Hot-Reload (please read the notes on that page, playmode workflow is still far superior)
- you can now define User Script Rewrite Overrides - which will allow you to overcome most of existing limitations that cause compilation errors (on a one by one basis)
- big optimization in how long hot-reload part will take, first call will be unaffected when type cache is build but subsequent calls will be significantly quicker
- added 'Exclude References' options - this allows to remove specific dll references from dynamically compiled code (as in some cases you may get 'type defined in both assembly x.dll and y.dll'
- destructors will no longer cause compilation error
- (options opt-in) script rewriting can optionally emit comment - why change was made to help with troubleshooting issues
- Unity assembly reload can be forced off via LockAssemblyReload if specified in options - sometimes even though Auto-Refresh is turned off Editor still tries to recompile changes in playmode which prevents FSR from working
- new fields support (experimental) will be enabled by default

1.3.1

- open source release on github

1.3 - (Experimental) - New fields added in playmode

- New fields can be added and used in code
- New fields can be adjusted in editor (same as standard fields)
- New fields will be initialized to whatever value is specified in code or default value
- Experimental feature - at this stage expect some issues
- Opt-in - disabled by default to enable go to 'Window -> Fast Script Reload -> Start Screen -> New Fields -> enable'

1.2 - Debugger support

- Added debugger support (see documentation)

1.1 - Mac support / bug fixes

- Added Mac support (only INTEL editor version, SILICON still not supported)
- Added Linux support
- fixed namespace clash with Unity.Collections package
- common code lib will not be included in builds
- added check for auto-refresh in Editor - will proide guidance and option to adjust as otherwise full editor reload is triggered for changes
- added workaround for Unity file-watcher returning wrong file path on some editor versions
- added option to allow disabling DidFieldCountCheck - allowing to detour methods in those cases (eg for Mirror where it'll adjust IL and cause mismatch)
- added option to configure FileWatcher paths/filters as in some cases watching root directory was causing performance issues
- added minor initial-load optimisations - using session-state for items that do not need to be resolved on every reload

1.0 - First release, included features:

Fast script reload in editor / play-mode (compiles only changed files and hot-reloads them into current play session)
Hot-reload on device (in build)