* Add generic set operators in hgraph and adjust implementors in nodes package. * Experimental approach to frame operators. * Fixes to services where impl has more type resolutions than the interfaces.
0.2.21
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* Add date and datetime operators * Clean up generic operators to force all template types (defined in hgraph) to be un-implemented * Implement the core operators that have unit tests in this library.
0.2.20
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* Add ability to construct un-named compound scalar types * Add data frame iteration support.
0.2.19
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* Clean up processing of data frames. * Change and improvements to CONTEXT support * Additions to documentation
0.2.18
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* Don't try and invalidate values unless it is set explicitly (i.e. not as a property of a dict supplied ot a bundle) * Catch duplicate time in generator code to avoid misleading exceptions when this happens.
0.2.17
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* Add profiling support * Updates to context support