1.0.1 (May 26, 2021)
  Require minimum Ruby version of 2.5.0

1.0.0 (March 6, 2021)
  Commit to supporting latest patch versions of Ruby 2.5+
  Improve documentation
  Format code with StandardRB
  Bump gem dependencies

0.2.0 (May 12, 2017)
  Allow nested environment changes in the same thread

0.1.0 (January 7, 2017)
  Remove ActiveSupport dependency

0.0.4 (January 6, 2017)
  Improved thread safety
  Handle TypeErrors during assignment
  Improve documentation

0.0.1 (November 28, 2012)
  Initial release
