Release v0.2.1

Since the last release, there have been hundreds of bug fixes, performance improvements, and feature implementations gearing up for major feature milestones.

For React Native developers, the most visible changes in this release are that:

• The speed of reloads in development should have improved
• The C++ runtime library is now packaged in a separate AAR to avoid pickFirst nondeterminisms

Release v0.1.1

Amongst other issues, this release should fix:

1. Compatibility with devices on API level <19
2. Missing ICU dlls on Windows
3. Bytecode file locking issues during compilation on Windows
4. Crashes on macOS and Linux when certain warnings are emitted during bytecode compilation

Hermes v0.1.0

Initial commit

fbshipit-source-id: 75e378602933ab4aa91677dfa509a67063e64516