initial commit
added TwdD.Attributes
ready for testing with backend
update exports for gradients
linear gradient
transform gradient
work in progress
more progress
there is hope
cleaning up linear gradients
start radial gradients
begin stroke gradients
bergeys proposal
appease Travis
merged wtih master
haddock docs
export more gradient functions
for Travis
generalize radial gradients to annulli
set default line texture