feat: fix the double quotes caused eval() bug (#443)

* feat: fix the double quotes caused eval() bug

* feat: fix the conf file

* feat: fix the test case

feat: improve removePolicy and removePolicies in CachedEnforcer (#446)

feat: add missing code to SyncedCachedEnforcer and fix cache not used…

… issue (#444)

feat: upgrade all jCasbin dependencies to latest (#441)

* fix: fix potential null pointer issue

* feat: upgrade all jCasbin dependencies to latest

feat: fix potential null pointer issue in loadPolicyLine() (#439)

feat: add SyncedCachedEnforcer class (#438)

feat: port CachedEnforcer API from Go to Java (#435)

feat: fix javadoc badge and comment typo (#433)

* Update README.md

* modify note

feat: fix javadoc (#432)

feat: Revert "feat: fix the comma separater bug" (#431)

This reverts commit bab3550.