biolqm` module:
* new `influence_graph()` method for extracting the influence graph
* new `autolayout()` method for computing a layout for the influence graph
* `to_ginsim()` calls `autolayout()` if option `ensure_layout` is `True` (default) and no layout is already attached
See https://gist.github.com/pauleve/0bea6fd14e741c4795ef3fda2c13c245 for examples of usage
`ginsim` module:
* expose Style API for