Better infill

[i-make-robots]

7.78.5

Added

• Drag + drop a file now adds that file to the "Recent Files" list.

Fixed

• Infill of closed loops should now be properly filled. Was occasionally failing the in/out test and creating a mess. Thank you, plotting-along!
• MickeyMoe1992 now properly obeys the margin limits, same as the other converters.
• Render hints are now forced to enable antialiasing, etc.