Implemented optional subdomains with regex
Fix PHPDoc
Has child doesn't make sense for Hostname route
Matched length is not needed for Hostname route
Merge branch 'hotfix/3839'

Close #3839
Close #3825
Fixes #2477
Merge branch 'hotfix/3839' into develop

Forward port #3839
[2.1.2] Prepared for release

- Updated changelog
- Updated Zend\Version
- Updated readme
Merge branch 'releases/2.1.2'

2.1.2 readiness
Merge branch 'releases/2.1.2' into develop

2.1.2 readiness
Version bump

- Bump to 2.1.3dev
Merge branch 'version/bump'

Bump to 2.1.3dev
Merge branch 'version/bump' into develop

Bump version
allow a null page in construct array, to compensate for ZF issue #3823
add unit test
Fix usage of sprintf
Fix usage of xpath
Remove useless override factories
move test file
Fix path in the file moved
added new option to identical validator