[preview] Preview `v0.2.0`.

[release] Release `v0.1.7`.

Release v0.1.6

Enhanced line marking and added regular expression search support

Mark the starting point for the next 0.2.0 version

Mark the starting point for the next 0.1.5 version

Quite usable version (i.e. I personally use it)

Minor bug fixes and enhancements. (Even more stable than before.)

Some bug fixes and minor usability enhancements.

Minor bug fixes to the first official release.