Merge branch 'dev/support-stl-containers' of https://gitlab.kitware.com/john.parent/autopybind11 into dev/support-stl-containers

Update readme for stl yaml flag

Normalize user provided stl container instantiations
write out public API of stl containers to binding code to support opaque
type

This partially reverts commit 8ad0a05e

See merge request autopybind11/autopybind11!174

It maintains the warnings flag, but reverts the warning messages to using standard prints instead of using the warnings library.

Add flag for ignoring pygccxml warnings

Closes #195

See merge request autopybind11/autopybind11!172

Add an print_warnings flag which will inform the warnings module to
ignore warnings which are set by pygccxml.

Change all print messages which contained warnings to use the warnings
module.

Fixes: #195

Add basic dockerfiles

See merge request !167

README: Update `ignore_namespace_structure` to `enforce_namespace_structure`

See merge request !171

README: Clarify distinction between text_blocks Python and YAML files

See merge request !170

Was changed in e9849032

Additional regex changes

See merge request !169

Add optional template updates

See merge request !168

Add the code to create an option which uses a simple(reduced functionality)
wrapper function to create the template classes.  This class can be
replaced in each function, if necessary.

Eigen toggle ref support

Closes #191

See merge request !166