Correct snapshot version for stable branch.
Merge 0.4 into stable branch
clean release note header
Implement DefaultNull (refs #39)
add license headers
Update release notes
[maven-release-plugin] prepare release grapht-0.4.1
[maven-release-plugin]  copy for tag grapht-0.4.1
[maven-release-plugin] prepare for next development iteration
Add replaceEdge method to Graph.
Fix edge validation error
Correctly deserialize primitives in graphs (closes #42)
Update release notes
Initial configuration for Grapht web site
Remove replaceEdge
Drop replaceEdge from README
Drop unneeded import
Set up web site build
[maven-release-plugin] prepare release grapht-0.4.2
[maven-release-plugin]  copy for tag grapht-0.4.2