Tests

New AnyCodable implementation #699

Job	Run time
osx	4m 49s
linux-5_4 (swift:5.4-xenial)	3m 55s
linux-5_4 (swift:5.4-bionic)	3m 11s
linux-5_4 (swift:5.4-focal)	3m 50s
linux-5_4 (swift:5.4-centos8)	3m 14s
linux-5_4 (swift:5.4-amazonlinux2)	3m 22s
linux-5_5-plus (swiftlang/swift:nightly-5.5-xenial)	3m 35s
linux-5_5-plus (swiftlang/swift:nightly-5.5-bionic)	3m 23s
linux-5_5-plus (swiftlang/swift:nightly-5.5-focal)	3m 31s
linux-5_5-plus (swiftlang/swift:nightly-5.5-centos8)	3m 33s
linux-5_5-plus (swiftlang/swift:nightly-5.5-amazonlinux2)	3m 44s
linux-5_5-plus (swiftlang/swift:nightly-xenial)	3m 30s
linux-5_5-plus (swiftlang/swift:nightly-bionic)	4m 2s
linux-5_5-plus (swiftlang/swift:nightly-focal)	3m 43s
linux-5_5-plus (swiftlang/swift:nightly-centos8)	4m 6s
linux-5_5-plus (swiftlang/swift:nightly-amazonlinux2)	4m 12s
linux (swift:5.1-xenial)	51s
linux (swift:5.1-bionic)	55s
linux (swift:5.2-xenial)	57s
linux (swift:5.2-bionic)	1m 0s
linux (swift:5.2-focal)	49s
linux (swift:5.2-centos8)	1m 11s
linux (swift:5.2-amazonlinux2)	1m 3s
linux (swift:5.3-xenial)	3m 31s
linux (swift:5.3-bionic)	3m 24s
linux (swift:5.3-focal)	4m 24s
linux (swift:5.3-centos8)	4m 4s
linux (swift:5.3-amazonlinux2)	4m 25s
	1h 26m 14s

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