Factory 3.1 is now in the develop branch and is ready for testing.

[hmlongco]

3.1 offers improved performance when resolving "heavy" dependencies with long running initializers and minimizes lock contention across multiple threads, all of which should improve startup and launch times for those apps structured to take advantage of it.

• Reduce global lock contention when resolving "heavy" dependencies across multiple threads, see PR Reduce global lock contention in Factory resolution #365
• Improve cache performance and reduce lock contention with r/w locks
• Improve key hash performance
• Revises default decorator behavior to match that of default scope behavior (default unless overriden)