v0.14.4

New Features

• Add upload_pb_attrs helper for upload progress bars (#892)

Bugs Squashed

• Use GET method for static file routes instead of generic route (#893)
• Fix Route handlers convert falsy values (0, False) to empty strings #572 (#890), thanks to @civvic
• Treat an empty application/json body as {} in parse_form (#880), thanks to @linguistic76