v2.6.0

Changelog

a2a4adf Remove azure-pipelines integration
461671c Fix typo in CI workflow
b8d22f1 Add CI pipeline
a98f729 Remove Gopkg files
6ecd40c Move to Go modules
9c44c30 Merge pull request #16 from kautsig/read-from-stdin
c2a259e Do not wrap in buffered reader
fa2d613 Read from stdin when "-" is passed as input file