com.unity.timeline 1.6.1 Package Notes

`ClipDrawOptions.hideScaleIndicator` can now be used to disable the clip scale indicator.
Added an asterisk to the Timeline Window when the currently edited Timeline Asset is dirty (has unsaved changes). (1024230)
Added the `IInspectorChangeHandler` interface to change what happens when a UI component in the inspector is modified. (1283486)
(*Unity 2020.2+ only*) The Timeline window title displays an asterisk when there are unsaved changes.
Double click now toggles the collapsed state of group tracks.
A keyboard shortcut can now be mapped to expand or collapse group tracks.
Added `displayClipName` property to ClipDrawOption. Use `displayClipName` to display (true) or hide (false) the clip name.
New API added to `TimelineEditorWindow`: `TimelineNavigator`.
- Enables navigation between timelines and nested timelines through code for automation purposes.
- Gives access to Timeline window breadcrumbs.
*(Unity 2021.2+ only)* Added `Framelocked preview` option in Timeline preferences.
Added framerate display with standard framerates.
`TimelineAsset` framerate can be set with a `StandardFramerate` value. (`TimelineAsset.SetStandardFramerate`)

Removed non-working PlayRange options (Loop/Hold) as both were actually mapping to Loop behaviour and always have been.
Timeline settings menu has been modified to use standard framerates in framerate submenu.
`TimelineAsset.fps` is obsolete and is replaced by `TimelineAsset.frameRate`.
`TimelineProjectSettings.assetDefaultFramerate` is obsolete and is replaced by `TimelineProjectSettings.defaultFramerate`.

Removed GC allocations in `PlayableDirector.duration` when a timeline asset is assigned. (1298818)
Removed warnings with AnimationWindowState snap mode. (1306205)
Fixed issue where the "Navigate Right" (default key: `Right Arrow` ▶) would not behave consistently. The correct order of operations should now always be, in order: expand group, select first track of group, then select first item of the track.
Fixed frame display not rounding up correctly. (1333009)
Fixed an issue where `TimelinePlayable` duration would not be initialized if the playable is not created from the PlayableDirector. (1329151)
Fixed memory leak in custom playable inspectors. (1332377)
Fixed exception when using the Key All Animated shortcut with no Timeline selected. (1334339)
Fixed issue where a warning would appear regarding obsolete `AnimationWindowState.SnapMode` values.

com.unity.timeline 1.6.1