Merge pull request #58 from elwyncrestha/dependabot/maven/spring-5.2.…

…3.RELEASE

Bump spring from 5.1.5.RELEASE to 5.2.3.RELEASE

Add: Presentation File

Merge pull request #53 from elwyncrestha/update-ER

Update ER

Merge pull request #48 from elwyncrestha/enhance-notification

Implement and Enhance Notification

Merge pull request #41 from elwyncrestha/student-transaction

Student Transactions

Fix Bugs

Update README.md