• #106 Fix UriRetriever::combineRelativePathWithBasePath() does not qualify UriResolverException
• #104 Constraint::check() uses wrong indefinite article in error message to express the type constraint
• #101 replace invalid filesystem dependent directory separator references
• #107 Added PHP 5.6 and HHVM to travis.yml
• #99 Use mb_strlen instead of strlen when mbstring extension is available.
• #98 Fix constraint errors getter
• #100 minor fix of BasicTypeTests
• #103 Fix required property validation