Are we there yet?

Last beta until v1. Only bugfixes and no more new features until stable release.

Major changes in this beta:

• 2daf701 Implement reverse lookup on click
• 945f3d1 Moar keyboard shortcuts
• 439806e Up/Down keys move through bom table
• db14fe3 Optimize render
• bff64b3 Handle substitutions in footprint text
• 29fdeb1 Add dark mode
• 16e76d0 Calculate bounding boxes of edges properly
• cba32ae Fix crash on polygons without footprints
• 7630e3e Fix zoom calculation