this release changes:
- feature: tabs!
- feature: a global colorpicker
- feature: stroke width preset palette
- feature: added "semi-infinite" canvas layout ( thanks @D0V4HKIIN !)
- feature: added two-finger long-press touch gesture that switches the active pen (like stylus buttons)
- feature: added pdf import bitmap scaling preference
- UI: floating toolbars
- UI: shape builder picker is now a categorized grid (thanks a lot @Kneemund !)
- improvement: copy, cut and paste selections between tabs and windows
- improvement: flap revealed state is now remembered across app launches
- fix: svg clipboard paste
- fix: lag when panning in "continuous-vertical" layout
- fix: layers when erasing marker strokes in "split-stroke" mode
- fix: "split-stroke" mode only eraser one segment at a time
- fix: freeze when saving multiple times in succession
- fix: blurry vector images after zooming in
- fix: some blurry icons