fix go 1.18 compatibility

Merge pull request #25 from modern-go/fix-go1.18

WIP: update signature of mapiterinit of go 1.18

re-release 1.0.1 as v1.0.1

Merge pull request #2 from justinsb/lazy_init_type_discovery

Lazy-init types & packages

moved tests into separate repo

1.0.1

fetch all dep in build

initial release

1.0.0

add dependency declaration