Bionetgen

Minor behavior change to visualize where, if output is specified the files won't copy back to the original folder.

Internal BNG version updated to 2.7.0, added visualization type `all` to get all visualization types in one command.

Added observable quantifier parsing. Fixes to `actions` argument parsing.

Action arguments are now dictionaries, actions like `setModelName` that needs to be used before the model are now parsed correctly, a bug where using a new line with `\` broke parsing is fixed, added observable pattern quantifier parsing and minor change to parsing to allow for observable quantifiers `<` and `<=`, `sample_times` argument parsing fixes and more informative errors if it fails.

Minor bugfix for notebook template, numpy requirement removed for issue 11, fixes for issues 15, 16 and partially 21.

Early development version of a new visualize subcommand that automatically runs a visualize action on a model and returns the resulting file. New require keyword that quits if the current version is not equal to or greater than the required one.