* Restore correct coloring to selective callback
This fixes the bug raised in #30506
* Fix format issues for Python 2.6 & indent
Removed the zero length fields to support format under Python 2.6
Fixed E128 continuation line under-indented for visual indent issue
* Using docstrings conflicts with the standard use of docstrings
* PYTHON_OPTIMIZE=2 will omit docstrings. Using docstrings makes future
changes to the plugin and module code subject to the requirement that we
ensure it won't be run with optimization.
* only complain about ini deprecation if value is set
* set plugin config for stdout and other types
* updated plugin docs, moved several plugins to new config
* finished ssh docs
* fixed some issues seen in plugins while modifying docs
* placeholder for 'required'
* callbacks must use _plugin_options as _options already in use