Introduces PollingDispatcher + tests
Removes untested code.
Makes the PollingDispatcher sealed.
Adds documentation to the PollingDispatcher.
Adds the BalkingDispatcher + tests.
Fixes a stylecop issue.
Improves PollingDispatcher class description.
Adds direct dispatcher.
Seals the direct dispatcher. Sealed is important to prevent from inheritance abuse and ugly callstacks.
Adds the test DoesNotLoseAnyTaskWithTwoWriterThreadsOnTheSameSequencer for Sequencer
Updates readme.md
Updates readme.md
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Michonne.Tests/SequencerTests.cs
Created helper class for task based tests