Tabnetviz

For edge group definitions in the configuration file, explicit edge lists should now be specified in nested brackets such as [[node1, node2], [node3, node4], ...]. Previously, using parentheses for the edges such as [(node1, node2), ...] worked but for some reason now they don't (it's not standard YAML). Hence the change to brackets.

New features in this release:

- input/output files can be specified on the command line so the same config file can be used to generate drawings for different networks
- part of the network can be removed.

Bugfixes:
- source and target column names were not read from the config file; this is now fixed.
- "circos" layout name was mistakenly entered as "circle"
- "osage" layout name has been added.

Fixed: program reported the previous version number. (Note: also includes the previous critical fix for Python 3.7+!)

* yamlloader loads dict instead of ordereddict for Python 3.7+, leading to errors. This has now been fixed.
* Documentation improvements.

Improvements:

* catch invalid or misspelled keywords, quantity names, attribute names, provide suggestions
* clusters can be specified as dictionary as well as list
* improved user guide (TOC, figure, etc.)
* show version number with -h option

Bug fixes:

* fixed handling of parallel edges in multigraphs
* fixed error when edgestyles are defined but nodestyles are not

Version number had to be changed to match PyPI version.