0.8.2

This is a bug fix release.  Changes include:

- Improved debugging verbosity
- Keyboard handling fixes
- Build fixes with wonky libdrm versions
- Better tty handling on crashes
- Improved robustness when unloading and reloading splashes
- "Enter key" support in watch-for-keystroke command
- Alpha channel support for text in script plugin
- Better backward compatibility in plymouth-set-default-theme
  with old symlink method.