plugin: Fix crash when sys.stderr is None

dialog: Skip updating if HeightCtrl == 0

plugin: Fix issues finding pcbnew frame

Add v9 to the version check

plugin: Fix issues finding pcbnew frame

buzzard: Simplify scaling

deps.svg2mod: Fix text scaling factor

dialog: Increase symbol button size

dialog: Add int parse to catch invalid values

dialog: Fix wxformbuilder source and re-generate

Merge pull request #108 from NPoole/Advanced-Tab

Merge branch 'main' into Advanced-Tab

dialog: Remove min-height writeback

Add Line Spacing adjustment

Merge pull request #113 from gregdavill/fix/scaling_quirks