Add support for d3 v4

v0.5.0

Prep v0.5.0 release

v0.4.10

Update to lodash v3.10.0

v0.4.9

• #180 - Fix order of cluster elements so label is visible
• #177 - Remove y variable from global scope.

v0.4.8

Clusters are now assigned an id in the DOM if they have their id attribute set in the input graph.

v0.4.6

Misc fixes to experimental cluster feature.

v0.4.3

Added support for applying CSS classes to edges. See https://github.com/cpettitt/dagre-d3/pull/151.

v0.4.2

• Added diamond shape (dbbe66d)
• Added a new story board demo (5e62b0b). Thanks @DavidPratten!

v0.4.1

• Added new "undirected" arrowhead (85d0f07)

v0.3.3

• Doc improvements
• Fix for IE (SCRIPT5022: NoModificationAllowedError)

v0.3.2

• Added support for transitions. See the interactive demo for an example.
• Added support for require.js (https://github.com/cpettitt/dagre-d3/pull/103).