Update .travis.yml
Lens addition
Push against new -lib
Partial conversion of Backend.SVG ot Lens
Lensify SVG.CmdLine
Finished adding Lens to SVG
revert SVG.CmdLine no need to use Lens - no records exported
travis: check out same-named branches of -core if it exists
newtype to Wrapped
Merge branch 'lens' of https://github.com/diagrams/diagrams-svg into lens
Merge pull request #40 from diagrams/lens

Lens