v0.5.2

• placing/editing checkpoints now works!
  • click on the place where checkpoints should typically go, and it'll let you make one. click on the icon of an existing checkpoint to edit it
• importing: <Lasdl;"R> is now auto-selected if your sm/ssc uses the xdrv style (like with the AV noteskin)
• fix freezes w/ logging
• fix sm import dialog text overflow edgecase
• fix w/ loading charts during music playback

full changes here: v0.5.1...v0.5.2