v4.0.0 Test Net Release

Release includes below changes :

1. Rewards and interest distribution for vault and lockers.
2. Liquidation and collector module refactor
3. License update

What's Changed

• Setup script initialized, WIP by @vishnukumavat in #393
• Updated code structure in all the modules by @rajrohit10 in #395
• update license by @dheerajkd30 in #396
• Alias fix by @pratikasr in #397
• adding comments by @pratikasr in #398
• updating errors by @pratikasr in #399
• Error msg changed by @cgsingh33 in #400
• Refactoring Collector by @pratikasr in #401
• Resolving bugs in vault & locker module by @rajrohit10 in #402
• fixing app file issues by @rajrohit10 in #404
• go fmt project by @dheerajkd30 in #405
• Updated modules and fixes by @rajrohit10 in #403
• update vault genesis state code by @dheerajkd30 in #406
• genesis export added for vault, rewards by @cgsingh33 in #407
• rewards genesis added by @cgsingh33 in #409
• merge feature/dev to development by @cgsingh33 in #408
• liquidation genesis updated by @cgsingh33 in #410
• Vault/locker fix by @cgsingh33 in #411
• update kv store and module for testnet by @dheerajkd30 in #412
• Feature/dev by @vishnukumavat in #413
• added leftover modules kv store by @dheerajkd30 in #414
• Feature/dev by @pratikasr in #415
• Update ems store name by @vishnukumavat in #416

Full Changelog: v3.1.0...v4.0.0