Version 1.1.4 release

- Added optional support for vibrancy in Yosemite, which also allows
extended dark mode support
- Status filtering crash corrected (thank you @ypresto!)
- Status and label fetching-related bugs corrected
- Readability colour tweaks and small retina-related improvements
- Image display corrections under OS X 10.8
- Preference layout improvements for OS X < 10.10