1.8-SNAPSHOT

Update 1.8-SNAPSHOT:

- Added comments to some files

- Created LogUtil class with LogUtil.formatCredentials for formatting credential, test / usage in CredentialPrintTest

- Improved ExecutorUtil by adding ExecutorUtil.isPool & ExecutorUtil.getOtherwise (Check the comment for information)

- Improved getter in InstanceGetter.get by ensuring that type of instances is not multi instances

- Improved ProcyonConnection.getConnection by using Optional and adding ProcyonConnection.getActiveConnections

- Improved IConnection by adding IConnection.isConnected

- Other, more.