Fix to history expansion
Release v1.2.19
Fix for expanding/collapsing the history
Release v1.2.19
Release v1.2.20
enable blank labels for nodes
Release v1.2.21
resolve merge conflicts
Branch Rotation working
Fix to work out bounds of diagram and hence close #6
Release v1.2.22
Fix redraw
Release v1.2.23
Added fit to container function
Release v1.2.24
Add redraw and history resize to fitInContainer
Release v1.2.25
Merge pull request #23 from CIPowell/master

Various Improvements