Bumps version 0.16a1.
Checks for "inline" in scripting hook unit tests.
util.format_size: Adds docstring.
hook.py: Fixes the docstring formatting. Adds more docstrings.
database.py: Uses first() instead of scalar().
changelog: Updates latest to 0.15.1.
Bumps version to 0.15.1.

Merge branch 'develop'

Conflicts:
	wpull/version.py