Issue #2665216 by andypost, gidarai, daffie, mondrake, _utsavsharma, dawehner, catch, longwave, alexpott, Charlie ChX Negyesi: Deprecate Drupal\Core\Database\Connection::nextId() and the {sequences} table and schema

Issue #3182103 by TR, dan2k3k4, longwave, mondrake, Sweetchuck, Kristen Pol: Ensure correct signature for setUp(), tearDown(), setUpBeforeClass(), and assertPostConditions() methods

Issue #3121362 by jungle, Meenakshi.g, dww, xjm, alexpott, tim.plunkett: Fix duplicate word typos (the the, to to, etc.) for code comments

Issue #2822382 by voleger, pfrenssen, erozqba, jungle, RytoEX, borisson_, jofitz, shashikant_chauhan, sidharthap, dawehner, xjm, kiamlaluno, catch, daffie, klausi: Make every $modules property protected on classes extending BrowserTestBase and KernelTestBase

Revert "Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase"

This reverts commit 69501f30.

Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase

Issue #2976889 by phenaproxima, xjm, chr.fritsch, samuel.mortenson, larowlan, alexpott: Add a trait to create media types in tests and replace MediaFunctionalTestCreateMediaTypeTrait

Revert "Issue #2976889 by phenaproxima, xjm, samuel.mortenson, chr.fritsch: Add a trait to create media types in tests and replace MediaFunctionalTestCreateMediaTypeTrait"

This reverts commit 58d601eb.

Issue #2976889 by phenaproxima, xjm, samuel.mortenson, chr.fritsch: Add a trait to create media types in tests and replace MediaFunctionalTestCreateMediaTypeTrait

SA-CORE-2017-003 by Berdir, David_Rothstein, Wim Leers, alexpott, catch, cilefen, larowlan, mlhess, pwolanin, quicksketch, samuel.mortenson, smaz, stefan.r, xjm

Issue #2831936 by marcoscano, seanB, chr.fritsch, l0ke, Wim Leers, vijaycs85, phenaproxima, pguillard, johndevman, drubb: Add "File" MediaSource plugin

Issue #2831274 by slashrsm, seanB, Wim Leers, chr.fritsch, phenaproxima, naveenvalecha, marcoscano, webflo, Gábor Hojtsy, amateescu, Boobaa, iMiksu, mtodor, effulgentsia, xjm, Berdir, tim.plunkett, dawehner, tkoleary, tstoeckler, tedbow, alexpott, yoroy, catch, Bojhan, andypost, jhedstrom, jibran, aspilicious, boztek, cbr, bigbaldy, alex0412, dagmar, blueminds, ekes, Dave Reid, Sam152, bojanz, pixelmord, jonathanshaw, CTaPByK, webchick, samuel.mortenson, dbt102, dishabhadra, proweb.ua, rakesh.gectcr, rasikap, paranojik, pameeela, neardark, NormySan, Primsi, nicolas.rafaelli, romainj, royal121, vladan.me, vpeltot, woprrr, vilepickle, toni04, scheban, tduong, temkin, tim-e, mbovan, mashermike, felribeiro, giancarlosotelo, hctom, euphoric_mv, eric.duran7@gmail.com, edurenye, eelkeblok, H1ghlander, Jaesin, hkirsman, ja_ca, NickWilde, joachim, joshi.rohit100, marcingy, NerOcrO, Mixologic, jcisio, jfrederick, Lukas von Blarer, Maouna: Bring Media entity module to core as Media module