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Conflicts:
	.gitignore
	.travis.yml
	CHANGELOG.md
	README.md
	guard.gemspec
	lib/guard.rb
	lib/guard/guardfile.rb
	lib/guard/interactor.rb
	lib/guard/notifier.rb
	lib/guard/notifiers/notifysend.rb
	lib/guard/notifiers/rb_notifu.rb
	lib/guard/version.rb
	spec/guard/dsl_describer_spec.rb
	spec/guard/dsl_spec.rb
	spec/guard/guardfile_spec.rb
	spec/guard/notifier_spec.rb
	spec/guard/notifiers/gntp_spec.rb
	spec/guard/notifiers/notifysend_spec.rb
	spec/guard/runner_spec.rb
	spec/guard/watcher_spec.rb
	spec/guard_spec.rb

Fix #471

Also, refactor Guard::DslDescriber, re-add Guard's deprecated
methods (now in Guard::PluginUtil) and allow
Guard::PluginUtil#initialize to take 'guard-xxx' or 'xxx' as argument

We don't need to break the current API too much! :)

Also, more documentation for Plugin::Base, Setuper and Group

Also, streamline requires

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I have no idea how to write a failing spec, because escaping
happens within `system` when you provide each argument
as parameter.

system([env,] command... [,options]) → true, false or nil

(Fixes #443)

This reverts commit 79342a6e.

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