v0.0.5

• env:list now outputs the environment variables sorted.

v0.0.4

• Bug Fix: Call to an unnecessary external library

v0.0.3

• Added support for specifying multiple environment variables.

v0.0.2

• Removed development dependency on gem 'rake'
• Improved gem description. Added documentation about programatic use.
• Added configuration option for roles that env_config sets/reads the
  environment variables from.
• Added an argument for specifically setting roles when using the Environment
  class programatically.
• Note: Implemented using the potentially unstable and subject to change
  Capistrano::Plugin API.