tests

Add codec.codec stubs #111

Job	Run time
Style	11s
py-3.9 lib-6.0 ubuntu-latest	4m 4s
package-source	23s
package-wheel (macos-latest, arm64)	17m 16s
py-3.9 lib-5.1 ubuntu-latest	3m 57s
package-wheel (macos-latest, x86_64)	36m 44s
py-3.9 lib-6.0 macos-latest	9m 17s
package-wheel (ubuntu-latest, i686)	16m 49s
py-3.9 lib-6.0 windows-latest	4m 56s
py-3.9 lib-5.1 windows-latest	2m 53s
package-wheel (ubuntu-latest, x86_64)	15m 47s
package-wheel (windows-latest, AMD64)	13m 49s
publish	34s
	2h 6m 40s

Provide feedback