feat: fix empty string values converted to NULL in PostgreSQL

feat: update go-pg to overcome SASL error (#50)

feat: update to Go 1.18

fix: fix broken links (#47)

feat: upgrade casbin to latest and add error to LoadPolicyLine() (#44)

feat: specify dbname in NewAdapter() (#41)

* feat: specify dbname in NewAdapter()

* Update adapter.go

Co-authored-by: Yang Luo <hsluoyz@qq.com>

fix: ptype column name (#36)

Signed-off-by: abingcbc <abingcbc626@gmail.com>

Merge pull request #34 from tangyang9464/master

fix: update UpdateFilteredPolicies method

Merge pull request #32 from closetool/tablename

fix: change release account

Merge pull request #31 from closetool/tablename

fix: support pg v10