Version 2.1.0

- Added `delimiter_align` option
- Added support for regular expressions with lookaheads and lookbehinds
Version 2.2.0

- Added center-alignment mode
- Improved right-alignment mode
- Added `mode_sequence` option
Version 2.3.0

- Added special keys to set alignment options in interactive mode
- Better center-alignment in the presence of leading whitespaces
Version 2.3.1: - Implemented 'stick_to_left' option in center-alignment mode
Version 2.4.0

- Regular expression support in interactive mode (CTRL-/)
- Implemented `mode_sequence' expansion: e.g. lrc*, lrc**
Version 2.4.1

- <CTRL-/> doesn't work on GVim. So added <CTRL-X> as another trigger for regular expression
- <Left>, <Right> key to toggle stick_to_left option
- Retain visual selection display on <CTRL-L/R/O/X>
Version 2.4.2

- Changed <Left> key to set left_margin to zero
- Updated help file
Version 2.5.0

- Improved output: Colored and replayable
- Fixed a minor bug in center-alignment
- Fixed invalid type conversion in interactive mode user prompt
Version 2.5.1: - Interactive mode made more forgiving of invalid inputs