Implemented a file parser. Added SourceOfExamples for lazy example listing (especially useful when lazily searching for files that match a certain prefix).
Ported the file search with pre-Java 7 API.
Overloaded the the fileParser method. Renamed SourceOfExamples to ExampleSource. Documented fileParser, FileExamples, and ExampleSource.
Moved ExampleSource into a separate file.
Documented the new Parsers API a bit. Prepared the new API so that we can port the old ones to the new. Added support for filtering erroneous examples.
Documented the DynamicExamples and FixedSetExamples classes.
Now using ExampleSource in collection-based completion parsers. Removed the Examples parser. Renamed DynamicExamples to ParserWithExamples.
Created unit tests for ParserWithExamples and FixedSetExampleSource.
Improved the description of ParserWithExamples tests.
Added tests for FileExamples. Improved the file-searching in FileExamples.
Merge remote-tracking branch 'remotesbt/0.13' into 0.13
Reintroduced the `examples` method. Reintroduced and deprecated the `checkMatches` method.
Merge pull request #1236 from urbas/0.13

Implemented the fileParser and added DynamicExamples.