Release v0.1.9

Changelog

a1187e5 Added mergify config
7c777a5 Bump github.com/bitcoinschema/go-bitcoin from 0.3.16 to 0.3.17
73e4e80 Bump github.com/bitcoinschema/go-bitcoin from 0.3.17 to 0.3.18
56c7453 Label sync
37a4cf1 Merge pull request #11 from tonicpow/dependabot/go_modules/master/github.com/bitcoinschema/go-bitcoin-0.3.17
aabccae Merge pull request #12 from tonicpow/dependabot/go_modules/master/github.com/bitcoinschema/go-bitcoin-0.3.18
c2a4eba Modified mergify config
585ceff Optimized string conversion
0e93006 Run go 1.16 and fixed warning
ad0e251 Updated code coverage
c7438e8 Updated labels, mergify, makefile, badge
a91759f Updated linter
cd8ee37 Updated linter, removed deprecated linters
d3461d5 Updated mergify