bump version to 0.6.1 [ci skip]
new module Diagrams.TwoD.Path.IteratedSubset

For creating fractal trails based on the "iterated subset"
construction, iteratively replacing segments with a given seed pattern.
be more precise about LANGUAGE pragmas in IteratedSubset.hs
import Diagrams.Core.Points to make GHC < 7.6 happy re: V (Point a) instance
we don't need Travis to build against HEAD monoid-extras or dual-tree anymore
clean up turtle-tests depends
.travis.yml: remove monoid-extras/ and dual-tree/ from cabal install command too
Add layout based on circle-packing
Typo
Add createCirclePacking as suggested by brent
Merge pull request #7 from nomeata/master

A circle packing layout
add 0.6.0.1 to CHANGES [ci skip]
deal better with zero-length segments
new Diagrams.TwoD.Factorization module
Merged cabal file.
Add "hiding (moveTo)", due to lens-3.8
Bump lens lower bound to 3.8

Otherwise, there's the possibility of build errors when using lens-3.7 with GHC < 7.6.  (hiding declarations for non-existent identifiers used to be errors)
add 'cabal update' to .travis.yml
add 0.6.0.2 to CHANGES
Fix broken build by hiding duplicate function name.