v0.1.0, 2014-03-26 -- Initial release.
v0.1.1, 2014-03-26 -- Improved documentation.
v0.1.2, 2014-03-26 -- Clarified documentation.
v0.1.3, 2014-03-26 -- Bug fix and unit tests
v0.2.0, 2014-03-26 -- Added ability to load and store input/outputs with context variables
v0.2.1, 2014-03-26 -- Robustified handling of keys with illegal variable names
