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explicitly show the loading of the networkplanner library...
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Windows users MUST install Rtools
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Tweaking names

even passed tests
test('~/github/networkplanner.R')
1st pass at creating disjoint graphs from fake nodes. Not thoroughly tested
added edge removal and graph simplification to main read
Addressed issues with handling merged scenarios PLUS pass through all network fields
Merge pull request #43 from SEL-Columbia/handle_merged_scenarios

Handle merged scenarios and pass through all network fields
cleanup
Field rename and validation checks
factored out mapping edge attributes from one graph to another
stripped down read_networkplan and separated out make_directed
Finished factoring out clean and directed functions with tests
Merge pull request #44 from SEL-Columbia/refactor_and_validate

Refactor and validate
Bug fixes, added validation, renames and general cleanup
Merge pull request #45 from SEL-Columbia/cleanup

Bug fixes, added validation, renames and general cleanup
adding demo and more read_networkplan refactoring [tests broken]
Removed polymorphic/generic read_networkplan (read and create are now distinct functions)
1st draft of merging scenarios for sequencing
Completed merge example, make networkplan directed if not in sequence_plan_far