Issue #3009729 by Spokje, nedjo, jacob.embree, Liam Morland: Notice: Only variables should be passed by reference in PHP 7.1

Issue #2635668 by pcambra, Chris2, RenatoG: PHP Fatal error: Class 'MigrateDestinationEntity' not found

Issue #2298877 by sylus, marco.pagliarulo: Migration doesn't take into account language of host entity

Issue #1175082 by mikeryan, grendzy, pcambra, alexweber, greenjuls, danylevskyi, mrfelton, radiobuzzer, Bevan, jhedstrom, marvil07, rocket777, jpklein, David_Rothstein, Pierre Paul Lefebvre, darrenmothersele, xcafebabe, clemens.tolboom, Cottser, asherry, alanburke, fuerst, albarin | marcusx: Added Field collection field handler for migrate module.