Appveyor only run on windows; update to 1.18.2

Add http api for getting current config and reloading from a new config; make json field's case consistent with yaml's; format code

Add issue stale bot

Improve debug log

Improve log; update README

Remove travis CI badge in README

Fix appveyor config

Update token

Delete travis ci config; modify appveyor config

Remove debian and docker support from this repo

Support to run in Docker (#262)

fix(edns): modify `SourceNetmask` for IPv6 (#260)

Add missing go.sum for build with golang 1.16 (#258)

fix(edns): modify `SourceNetmask` (#255)

Fix nil pointer dereference for empty edns conifg