[Helix] Soften edges
[Helix] Cleanups
[Helix] Fix toroidal coil calculation
[Helix] Remove unnecessary calculations.
[Helix] Base pairs now render
[Helix][perf] Do not process points outside of the coil area
Merge pull request #3 from visigoth/master

helix progress (1 personal file changed so merging without question)