Handle different type declarations

• use default to handle type declaration other than interfaces & structs.
• use global map to store receivers of type that is not yet seen.

Support generics

What's Changed

• parse *ast.IndexExpr for generics by @afmahmuda in #24

Full Changelog: v1.2.0...v1.3.0

Added exclude functionality

What's Changed

• Added go-recipes badge by @nikolaydubina in #23
• fix format and fix problem from linter by @afmahmuda in #22
• add flag for file exclusion by @afmahmuda in #21

New Contributors

• @nikolaydubina made their first contribution in #23
• @afmahmuda made their first contribution in #22

Full Changelog: v1.1.8...v1.2.0

Update to go 1.18

Merge pull request #14 from zouyonghe/master

upgrade: go version 1.18