Tweaked Ant task scaladoc comments.
Changed all MatchResult in HaveWord to construct error message lazily.
Changed all MatchResult in IncludeWord to construct error message lazily.
Added nice toString to BeWord, BehaveWord, ContainWord, DefinedWord, EmptyWord, EndWithWord, FullyMatchWord, HaveWord, IncludeWord and LengthWord.
Changed all MatchResult in MatcherWords to construct error message lazily, and make returned MatcherFactory1/Matcher to have pretty toString.
Added pretty toString to NoExceptionWord.