v4.2.0-RC2

General patch release with dozens of bug fixes and more documentation improvements.

See the list below for more information on those changes and more.

Changelog

-#973 loading properties in bean construction (by @nykolaslima)
-#974 adding no-arg default constructor on InvalidInputHandler (by @Turini)
-#969 Removing some dead code and refactoring Rules file (by @Turini)
-#962 added breadcrumbs on site (by @Turini)
-#965 Fixing travis and adding maven, release and license badges (by @Turini)
-#964 fixing gemfile versions and adding sitemap (by @Turini)
-#961 relaxing visibility of Serializee getActualType (by @Turini)
-#959 Update header.html (by @danilomunoz)
-#960 Adding docs about MockSerializationResult. (by @renanigt)
-#957 don't log exception on missing environment.properties (by @nykolaslima)
-#955 updating versions on README and download pages (by @Turini)