More events and helper functions + fixes

Minor Changes

• 🇫🇮 Add Finnish translations: #1262
• 🇰🇷 Add Korean translation: #1268
• Add more text-layer events: #1265
• Add setInitAngle option for rectangles: #1260
• Add setStyle to Draw class to update style of currently drawn shape: #1290

Patches

• Change rotateEnabled return type void to boolean (#1264): #1263
• Optimize performance and prevent Leaflet bug: #1277
• Fix rotation of new added layer: #1270
• Remove .only from tests: b7effdc
• Doesn't return the rotation help-layer over getGeomanLayers(): #1287
• Draw start now always puts first marker at the center of the map: #1261
• Update Readme with Pro options & title of test: #1291
• Chore(npm): add engines and nvmrc for easier node version handling: 7fcd102
• Move fixes from Pro code into OSS: #1280

Credits

Huge thanks to @masysma, @sundo-dylan, and @Falke-Design for helping!