Modest packaging clean-up

Added:

• N/A

Changed:

• N/A

Fixed:

• Packaging

Properly packaged & out of beta Amara 3

Added:

• Namespace packaging

Changed:

• Added some flexibility to asyncio tools

Fixed:

• Packaging

First release candidate

Added:

• Helper tools for asyncio
  • def amara3.asynctools.go_async, async def amara3.asynctools.progress_indicator, class amara3.asynctools.req_tracer
• Helper for parsing requirements.txt files: def amara3.util.parse_requirement

Changed:

• Nothing notable

Fixed:

• Nothing notable