update changelog

bugfix: wide character rendering bug in tabgrid

chore: update changelog

hotkeys added: ctrl+p & n (next/prev line)

Merge pull request #17 from lmorg/gui-mode

gui mode: remove redundant definitions

update docs

re-add v4.0.0 tag

re-add v3.0.1 tag

re-add v2.1.0 tag

re-add v2.0.1 tag