Remove neotool.
Rearrange test into core and ext.
External requirements; separate core/ext testing; modified licence check.
PushBatch test coverage.
Error test coverage.
Lang test coverage.
Env test coverage.
Merge branch 'beta/2.0' into ext/spatial

Conflicts:
	test/core/1/misc_test.py
	test/ext/__init__.py
Tidied up docs.
Stylesheet tweaks for admonitions.
Merge branch 'beta/2.0' into ext/spatial
Tweak blurb.
Merge branch 'beta/2.0' into ext/spatial