Version 2.7.3

• Removed double invalid container

Version 2.7.2

• Silence wrong fatal errors

Version 2.7.1

• Bug fixes around regions

Version 2.7.0

• Minimum version is now 2.5.0
• Removed unused 'ref_lang' config value
• Added 'main_reg' config value, in order to control de default region as well.
  This value is still not yet available in the UI, but can be set manually.

Version 2.6.6

• Fixed language selection in the backend: Try author language before default backend language

Version 2.6.5

• Fixed Data Source execute method signature

Version 2.6.4

• Updated compatibility info

Version 2.6.3

• Reverted c631bbb and made sure that page alerts won't crash

Version 2.6.2

• Removed un-necessary delegate.

Version 2.6.1

• Fixed a bug when no region is set.