rollbar-gem v0.12.20 released

We've released a new patch version of rollbar-gem, version 0.12.20. Get it on
Rubygems or GitHub.

This release contains a compatibility fix for Sidekiq < 2.3.2, as well as an improvement to the
project_gems feature. If you have multiple gems that you want to be considered in-project code, you
can now specify them with a regex (strings still work too).

For example:

Rollbar.configure do |config|
  config.project_gems = [/your_company/, "some_specific_gem"]
end

Thanks to Jonathan Cheatham for the pull request.