Changes since version 3.1-dev0 :

Ilia Shipitsin (4):
      CI: use "--no-install-recommends" for apt-get
      CI: switch to lua 5.4
      CI: use USE_PCRE2 instead of USE_PCRE
      CI: VTest: accelerate package install a bit

Tim Duesterhus (2):
      REGTESTS: Remove REQUIRE_VERSION=2.1 from all tests
      REGTESTS: Remove REQUIRE_VERSION=2.2 from all tests

William Lallemand (1):
      DOC: replace the README by a markdown version