-----------------
- Added a selenese assert type 'list' and added it to the window management
query methods.
- API expansion: added ``openWindow``.
- API change: filter the result of ``getAllWindowNames`` to ignore 'null'.
- backwards-compatible API change: ``selectWindow`` now selects the main
window also when passed the window id ``None`` or no argument at all.
- pinned compatible ZTK version to 1.0.1, grok version to 1.2.1, generally
pinned all software packages used to consistent versions for this package's
own testing