Android Support Library v22.1.0 brings major changes to AppCompat, including a new delegate API (AppCompatDelegate) that decouples AppCompat functionality from ActionBarActivity, enabling integration with any Activity or Dialog subclass. Material-styled dialogs are now supported via AppCompatDialog and a new AlertDialog implementation. The android:theme attribute now works on any view with parent theme inheritance on API v11+. Support-v4 gains a public ColorUtils class and DrawableCompat tinting backport. The Palette library received a Builder API and a 5-10x performance improvement in color quantization through algorithmic optimizations and reduced object allocations.
