Update files from koron-go/_skeleton 7ca83b7

Update files from koron/gomigemo 5a674c9

Merge pull request #16 from koron/rootdir-without-go-files

update files from koron-go/_skeleton at 3cbae05

remove dummy Go file

Merge pull request #15 from koron/digraph

update dependencies

Add a dummy file to make the root directory recognized as a Go package

fix misspell, apply gofmt -s

update files from koron-go/_skeleton 2e9d122

fix build constraints

add digraphs

Merge pull request #14 from koron/doc-and-fix

remove an ineffective assignment

arrage README