v0.5.10

this release changes:

• feature: added a grid builder
• feature: ctrl + pointer drag for panning the canvas, ctrl+shift + pointer drag for zooming
• improvement: added the ability to reorder workspaces
• improvement: rough style now supports transparent colors
• improvement: full asynchronicity for all import and exports
• fix: rough style bezier curves drawing
• fix: added missing association for `.xopp` files
• fix: ability to select folders in export-doc-pages filechooser
• fix: text input with IME's ( thanks @Mr-Spade !)