2.0.0b0 release

[Greg Shuflin]

The first beta release for the 2.0.x series is now available on PyPi!

As with the alpha releases, we don't ordinarily use the "beta" tag in our release procedure. We're using it now to have extra scope for testing and feedback on the major 2.0.0 release.

The performance bug blocking protobuf support has been fixed and protobuf support restored in this release. Please test out this release on a branch in your repo, and let us know on Slack and/or via github issue if you see any bugs or issues.

Thank you to the contributors for this release:

      9 John Sirois
      6 Eric Arellano
      4 Greg Shuflin
      1 Tom Dyas
      1 Stu Hood
      1 Daniel Wagner-Hall
      1 Asher Foa

[Eric Arellano]

The second beta for the 2.0.x series is now available on PyPI.

This brings a couple of bug fixes, including better signal-handling with ctrl-c and Pantsd invalidating less often. Some links:

• 2.0 Upgrade guide
  
• Detailed changelog

Some folks have been wondering: when will the stable 2.0.0 release be? We're tracking the project here. tl;dr: the main remaining features we're considering are things like Protobuf plugins like GRPC and adding back an improved version of the `bundle` goal. The rest is documentation and polish on things like error messages for typos on the command line.

Generally, even though it's technically a "beta", 2.0.0b1 provides a more polished experience than 1.30.1. For context: if we had not forked 2.0, we would have released 1.34.0 by now. 

Thank you to this release's contributors:

  17 Eric Arellano

   8 Greg Shuflin

   6 Stu Hood

   3 Asher Foa

   2 Benjy Weinberger

   1 Tom Dyas

Thank you for everyone's feedback so far! Please let us know how we can help!

[Yi Cheng]

The third beta for the 2.0.x series is now available on PyPI.

This release brings a few bug fixes. Please kindly refer to the following docs for upgrade:

2.0 Upgrade guide
Detailed changelog

Thank you to this release's contributors:

   6 Eric Arellano
   2 Stu Hood
   2 Benjy Weinberger
   1 Greg Shuflin
   1 Asher Foa