Maboss

Fix a bug introduced in set_istates, and another in the conda package specification.

- Implementation of SBML-qual compatibility, using cmaboss

> sim = maboss.loadSBML(sbml_filename, cfg_filename, use_sbml_names=True)

This will load the sbml file with the given cfg file, or a default one if no cfg filename is given. use_sbml_names chooses if we should use the SBML name of SBML id to name the node in the MaBoSS model.

- Ensembles of MaBoSS models
- Fix FP table for MaBoSS server results
- Added warning when unbinding nodes

* fix `get_initial_state` with joined nodes (48)

- Remove restriction in the variables' name preventing them to contain boolean operators.
- Introduction of a list of reserved names, which can't be used (True, False, And, Or, Xor, Not, Node)
- Fix bug in plotting entropy

Fixed a bug in the parser for initial states, where a formula was refused if it contained spaces.

- Added an optional nil_label to replace in piechart, PCA chart
- Added an argument to PCA plot to highlight a model
- Fix arrow and text size
- Added option to label PCA comparison
- Fixing comparison colors
- Saving the PCA figure as self._pcafig
- Saving the 3D figure as self._3dfig