document automatic executor selection

[Chloé Vulquin]

Some executors are automatically selected based on the presence (or absence) of some parameters.
Please document what detections are made.

Also, it would be nice if some of them could be user-configurable in some capacity (e.g installing a new executor using #116 and having it be autoselected). If such a method already exists, please document it.

[Ariadne Conill]

it would be nice to have a config option to disable the auto selection. the way it works is that the first part before a - is considered part of a namespace, and the namespace is used for the use statement.

so bond-members results in use bond.

[Chloé Vulquin]

This behavior is good enough for me, just needs to be documented, then. 😄