net\stubbles\lang\types\Date::isBefore() and net\stubbles\lang\types\Date::isAfter() now except anything that can be casted via net\stubbles\lang\types\Date::castFrom()
use next minor version instead of bugfix version
  * added several shortcut methods on `net\stubbles\lang\types\datespan\Datespan`:
     * `startsBefore($date)`
     * `startsAfter($date)`
     * `endsBefore($date)`
     * `endsAfter($date)`
     * `formatStart($format, TimeZone $timeZone = null)`
     * `formatEnd($format, TimeZone $timeZone = null)`
increase support for date casting
fix test
raise dependencies to latest versions, raise php requirement to 5.4.x, raise minor version
add note about raised php requirement
build against PHP 5.6, but still allow failures as it's in beta only
Merge pull request #86 from mikey179/master

work for 3.5.0