feat(win): fit horizontally-out-of-view cursor in view

feat(win): fit vertially-out-of-view cursor in view

wip(win): fit cursor in view if it's out of view

chore: add requirements section

chore: add 'Meslo LG L DZ Regular' font for demo

chore: add missing license notice for treez

chore: update styling

chore: add Discord link

chore: add README.md for closed tech demo

fix(win): update cached width / height on update

feat(win): add centerAt()

exp: try spawning windows at anchor point w/ Fzf

wip(input): remove handleUpNDownsUpEvent()

wip(input): flush regarless of latest_event_type

wip(input): handle key up for up_n_down callbacks