Add CI and other fixes #8

Job	Run time
Make distribution	2m 0s
notify	19s
Perl 5.8 on ubuntu-latest with install-type system, dist	53s
Perl 5.8 on ubuntu-latest with install-type share, dist	50s
Perl 5.20 on ubuntu-latest with install-type system, dist	59s
Perl 5.20 on ubuntu-latest with install-type share, dist	43s
Perl 5.30 on ubuntu-latest with install-type system, dist	46s
Perl 5.30 on ubuntu-latest with install-type share, dist	46s
Perl 5.34 on ubuntu-latest with install-type system, dist	58s
Perl 5.34 on ubuntu-latest with install-type share, dist	1m 5s
Perl 5.34 on windows-latest with install-type share, dist strawberry	4m 45s
Perl 5.34 on windows-latest with install-type system, dist msys2	3m 6s
Perl 5.34 on windows-latest with install-type share, dist msys2	6m 22s
Perl 5.34 on macos-11 with install-type system, dist	1m 45s
Perl 5.34 on macos-11 with install-type share, dist	1m 50s
build-status	22s
	27m 29s

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