Features
- Load subdirectory packages by adding the subdirectory to the search path (i.e. setting the wsgi handler to something like `dir/api.app.handler`).
Previously, the subdirectory was expected to be a package (i.e. containing `__init__.py`)
Bugs
- Skip removing `.requirements` if `packRequirements: false`
_Alex DeBrie_
- Supply wsgi.input as BytesIO on Python 3
_Brett Higgins_