v0.2.0 Learn to walk

Added features:

• CommonAssertions:
  • MustBeSameAs and MustNotBeSameAs
• StringAssertions:
  • MustHaveLength
  • MustStartWith and MustNotStartWith
  • MustStartWithEquivalentOf and MustNotStartWithEquivalentOf
  • MustEndWith and MustNotEndWith
  • MustEndWithEquivalentOf and MustNotEndWithEquivalentOf
  • MustContainOnlyLetters
  • MustContainOnlyLettersAndDigits
• EnumerableAssertions:
  • MustHaveCount
• DictionaryAssertions:
  • MustContainValue and MustNotContainValue
  • MustContainValues and MustNotContainValues
  • MustContainPair and MustNotContainPair

Changes:

• MustHaveNoDuplicates name changed to MustNotContainDuplicates.
• New way of specifying tests for custom messages and custom exceptions.
• Instead of exception objects, delegates are now passed to raise custom exceptions.
• Custom messages are not used internally to reduce the number of objects created per call.
• Custom exceptions do not replace ArgumentNullExceptions any longer when MustNotBeNull is called internally.
• Renamed DictionaryAssertions:
  • MustContainKey
  • MustNotContainKey
  • MustContainKeys
  • MustNotContainKeys