LNT: cleanups suggested by -Xlint. MNT: ignore IntelliJ idea project files.
BUG: fix premature end to stepping of the warp cue. ENH: continue to develop warp cropping.
BUG: fix incomplete warp drawings for extremely fast step durations. ENH: finish up warp cropping for front and back gates.
ENH: mask the weft as the negative space of the warp's mask
ENH: nonlinear easing curves for the cursors in warp and weft. NOTE: warp and weft should probably be approx. the same length of since there are twice the hops in weft, and shuttles are snappy.
MNT: revert default layer brightness