New features:
- Line number
- Line number in status bar
- vim style keyboard commands
- quicksearch /
- Matches overview (right bar)
- 'Follow' file
- Bookmarks
- Multi files
- Improved savable search text
- Greater number of latest files
- Save position with latest files (not just the last one)
- Non modal filter dialog

Fixes:
- Up/Down arrows in filters
- Error in regexp
- Yellow background for errors/file changed
- Keep colours (partially) of selected text
- More readable file size (KiB, MiB)

Perf:
- Search slows down when there is a large number of matches