Resume Tizen targeting

Update README

v2.1.323

Remove redundant bindings

Disable Tizen targeting for outdated SDK

Update Win2D dependencies (Closes #45)

Merge branch 'preview/avalonia-12'

Enable `locl` and subroutinize

Upstream version v1.1.323

Upstream version v1.1.322

Match upstream TFM

Fix package versioning (#44)

Merge branch 'master' into preview/avalonia-12

Upstream version v1.1.321

Port to Avalonia `12.0.0-preview1` (#44)