update copyright

Fix missing icon error in LSP-UI hydra (#407)

Fixes missing icon error in LSP-UI hydra
> nerd-icons-faicon: Unable to find icon with name ‘nf-fa-rocket_launch’ in icon set ‘faicon’`

Bump version to 7.0.0.

In 28+, use vundo instead of undo-tree.

Minor fix.

Update docstring.

Diminish org-roam-mode.

Remove unused commands.

Close #142.

Bump version to 5.6.0.

Bump version to 5.5.0.