fix(CI): use go 1.18

Merge pull request #15 from codingpot/fix-build-error

fix: build error

refactor: use a common function to send a GET request

Merge pull request #12 from codingpot/fix-paper-list-params

fix: update PaperListParams to match Python

fix(README): CI badge should not change

fix: add v2 package path

fix: add v2 package path

fix!: rename files and types to match the original code in Python

BREAKING CHANGE:
- PaperListResult -> PaperList
- PaperListResultItem -> Paper

feat: update README with a link to the Python lib

fix: PaperListResultItem no longer implements Stringer