remove old rune config

add MIT license

brief readme

make all window operations in koto safely chainable, ignoring null

support find directional neighbor in tiles

fix offsetting when not at TileDirection origin

extend unmerge behavior to flatten and implicitly unmerge on orthogonal merge moves

fix merge right panic

trying snapshot tests with insta

deprecate Blank from tests, use Positionable trait

clean up serde dependency with koto, use strum for enum comparison

RefCell de-proliferation: centralize thread borrow rules into a single context

go all-in on koto instead

script tweaks: activating windows, minimize maximize behaviors, begin

support size nudges