3.1.6

New features

[5ed1da6] Added support for datetimetz_immutable configuration (@wryk)
[f14fbca] Showed generic flag when user select country which has no asset (@Dranac)
[d8d4380] Allowed search by nested associations of more than 2 levels (@damc)

Bug fixes

[83e971f] Fixed form-type-collection script for nested collections (@horlyk)
[ae4ebf8] Removed unneeded code used to keep BC with unsupported versions (@javiereguiluz)
[9a64ae3] Fixed issues reported by Symfony insight (@javiereguiluz)
[349807d] Removed the deprecated transchoice filter (@javiereguiluz)
[a62df25] Fixed formTypeOptions access if ea_field is null (@vic-blt)
[bf195b8] Allowed using virtual fields of type datetime (@javiereguiluz)
[4712247] Fixed the currency value when creating Money fields (@javiereguiluz)
[7768853] Used PercentType option only if it's defined by Symfony (@javiereguiluz)
[43b51e1] Enabled an alert for unsaved changes in TrixEditor fields (@rogamoore)
[d151d36] Fixed problem with RTL not working correctly (@krewetka)
[91ef0eb] Fixed sorting of to-many properties (@javiereguiluz)
[35547fb] Added raw filter in page_title block (@quentint)
[06b181f] Misc. doc fixes (@Art4)