#21: creating now vis command and improving history graph to support multiple parents
#21: refactoring trial graph to use javascript object. Adding restore zoom history graph
#21: history tooltip and status
#34: extracting load modules to persistence module in order to use it in checkout
#21: fixing history graph
Refactoring persistence and vis models.
closes #34: restore local modules
#24: graph diffs (exact match for now)
#24: graph diff combined
fix setup, match features described in paper
fix graph duration and colors
Just combined graph for diff. fix file access diff
#24: lcs diff over graph instead of activation tree structure
#26: python3 support, pep8 formatting, copyright messages, test and installation fixes. 0.6.0 release.