Issue #2619788 by pcambra: Get instance info from the entity instead of from the source for file mappings

Issue #2529538 by twistor, MegaChriz, stefan.r, drclaw, olofjohansson, Manish Jain, et al: Added generic entity language support.

Issue #2574789 by MegaChriz: Wrong processor settings set in FeedsUIUserInterfaceTestCase::testImporterImport()

Issue #2542416 by twistor, MegaChriz: Allow sources and targets to be marked as deprecated and hide them from the UI.

Issue #1286298 by fietserwin, Triskelion, MegaChriz, charginghawk, osopolar: Don't create new items, only update existing

Issue #2038525 by twistor, larsdesigns, DamienMcKenna: SimplePie Plugin Installation Documentation in README.txt

Issue #2509464 by twistor, joelpittet: Feeds module cannot find its parser module due to filesystem restriction

Issue #2509464 by twistor, Max1: Feeds module cannot find its parser module due to filesystem restriction

Issue #1953008 by MegaChriz, twistor, klausi: PHP Fatal error:  Nesting level too deep - recursive dependency? in FeedsProcessor.inc on line 199

Issue #1107522 by MegaChriz, twistor, ditcheva, nielsonm, franz, Niklas Fiekas, cthiebault, Uhkis, gcb, mparker17, guillaumev: Framework for expected behavior when importing empty/blank values + text field fix

Issue #2496735 by twistor, diarmy: For PHP 5.6.0 and above, Feeds should allow the use of cURL if open_basedir is enabled

Issue #2488036 by MegaChriz, orannezelehcim: Modules that define both an importer and a plugin can not be disabled

Issue #2333029 by twistor, MegaChriz: Extend mapping API to allow for defaults and multiple callbacks