Issue #2481107 by bobrov1989: Changed names of the flag count API methods in FlagCountManagerInterface.
Issue #2581507 by joachim: Changed EntityFlagType::showInLinks() to return a boolean.
Issue #2585977 by martin107: Changed Flag::preDelete() to get service outside of loop.
Issue #2572105 by snehi: Removed needless namespace importing in flag.module.
Issue #2581423 by joachim: Fixed getFlagType() returning an invalid flag plugin type ID as a fallback.
Issue #2581503 by joachim: Cleaned up terminology around 'subtypes'/'bundles'/flag types in docs.
Issue #2584299 by joachim: Removed hook_flag_access() as it clashes with hook_ENTITY_TYPE_access().
Issue #2581369 by joachim: Updated for change to hook_entity_view() parameters.
Issue #2472695 by martin107: Fixed incorrect query result in decrementFlagCounts(); fixed and enabled test method doTestFlagCounts().
Issue #2568135 by joachim, martin107: Removed $action parameter from getLink().
Issue #2488856 by martin107: Added a wrapper method around buildLink() that checks access.
Issue #2579067 by joachim: Updated tests for core change with title block.
Issue #2564445 by joachim: Added a 'global' field to Flagging entity
Issue #2564529 by joachim, rashid_786: Fixed flag weight is not saved.
Issue #2575503 by joshi.rohit100: Removed Travis CI Lines from README.md.
Issue #2571325 by joachim: Changed name of methods in ActionLinkTypeBase.
Issue #1870300 by blairski, stefan.r: Added workaround for core bug which can cause upgrade from Flag 2.x to Flag 3.x to fail.
Issue #2482319 by joachim, stevepurkiss: Fixed EntityFieldQuery on flaggings crashes when there are bundle and field conditions but no property conditions.
Issue #1718926 by joachim: Fixed missing calls to Field Attach API.
Issue #1133956 by joachim, amateescu, stevepurkiss: Added special handling to improve efficiency when displaying lists of flaggable comments.
Issue #2476499 by joachim, martin107, socketwench: Added detail to the documentation of the flag count API.
Issue #2481795 by Pravin Ajaaz, giancarlosotelo: Removed ignoring of flagging entity type as a flag type in EntityFlagTypeDeriver.
Issue #2568129 by martin107, giancarlosotelo: Moved lazy builder callback into a service.
Issue #2565501 by Berdir: Added lazy builder for flag links, now Dynamic page cache is in core.
Issue #2565283 by Pravin Ajaaz, rashid_786: Fixed docblocks for overridden methods to use @inheritdoc tag.
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