Removed README warning

Fixed Go 1.15 compatibility

Updated README

Added NULL check

fixed mod deps

Merge pull request goccy#62 from onwsk8r/master

Fix Windows compilation errors

Merge pull request goccy#37 from joelanford/fix/vendor

fix: go mod vendor

Merge pull request goccy#32 from negbie/patch-1

ParseBytes returns *cgraph.Graph and error

Merge pull request goccy#31 from goccy/feature/fix-subgraph-not-idemp…

…otent

Fix the issue that the order of subgraph does not idempotent

Merge pull request goccy#26 from goccy/feature/support-multibytes-font

Improve resolution at rendering text