Some changes have been made in result of first audit. Following points mentioned in previous audit report are still need to be addressed.
### 7.3. Unresolved, Low: Use of throw
### 7.4. Unresolved, Low: Possible, Code is subjected to gas optimization.
### 7.6. Unresolved, Low: Possible, Redundent Code
### 7.10. Unresolved, Medium: No use of visibility of visibility modifiers
### 7.11. Unresolved, Medium: Lack of Sanity Checks

This issue doesn't exist in previous version.
### 1.0. Bad Inheritance
DragonLock.sol
There is duplicate code in parent class and child class. `onlyOwner` modifier is already declared in `Ownable.sol` so there is no need to write this again in `DragonLock.sol`.