Design Pattern Requirements

[allilou]

• A document called design_pattern_desicions.md that explains why you chose to use the design patterns that you did
• Project includes a file called design_pattern_desicions.md that adequately describes at least 2 design patterns implemented in the project
• Circuit breaker pattern outlined here https://consensys.github.io/smart-contract-best-practices/software_engineering/#circuit-breakers-pause-contract-functionality
• explain what other design patterns have you used / not used. Why did you choose the patterns that you did? Why not others?