Merge branch '2021-04-15' into 'master'

patches/aivika-5.9.1.patch

patches/aivika-5.9.patch

patches/aivika-transformers-5.9.1.patch

patches/bits-0.5.3.patch

patches/cborg-0.2.5.0.patch

patches/data-serializer-0.3.4.1.patch

patches/filepattern-0.1.2.patch

patches/hspec-core-2.7.10.patch

patches/hspec-discover-2.7.10.patch

patches/hspec-meta-2.7.8.patch

patches/hxt-9.3.1.22.patch

patches/row-types-1.0.1.0.patch

patches/safecopy-0.10.4.2.patch

patches/shake-0.19.4.patch

patches/siphash-1.0.3.patch

patches/test-framework-0.8.2.0.patch

patches/vinyl-0.13.1.patch

patches/wai-middleware-static-0.9.0.patch

patches/yesod-core-1.6.19.0.patch