Change to version 0.6-dev
Update README.md
Custom PS1 for bash only
Show tags for `lol` alias
Revert "Show tags for `lol` alias"

This reverts commit 1443adabec40653a23268c815560f724a607e677.
Refactor comment
Add system clipboard shortcut
Set default background in no-X mode to dark
Do not save history of the shell that invoke Midway
Unmap window navigation
Add new tab navigation
Unmap F5 and F6
Bump to version 0.7