beginnings of attempted proof that ScaleInv satisfies the monoid action laws
remove unnecessary import
clean up shadowing warnings
performance improvement: make R2 strict and UNPACKed
export strokeTrail['] (and deprecate strokeT['])
made arrowShaft and arrowOpt, eliminated connectTrail and added connectPerim
split adjusting stuff out from D.Parametric into D.Parametric.Adjust
D.Parametric: export domainBounds
Merge branch 'master' of github.com:diagrams/diagrams-lib
more diagrams-haddock examples
clean up some warnings
more warning cleanup
more warning police
Add an attribute for miter limit.
Added defaults for line cap, join, and miter limit.
Added default attributes to match setDefault2DAttribute.
Merging.
Loops now working.  Code could use some refactoring.