Version bump and docs

bumped the minor version. Squirrel is officially v0.2.0, yippi.

plus, updated the README, adding more explanation about the Wayland issue. also showcased the pin feature. i’ll try to whip up a release workflow to add to my CI tomorrow.

I’m debating whether i should ship v0.2.0. the only major change from 0.1.0 is the addition of pinning. i might wait until i have image support and ship later, or i might change my mind, im unsure.