- Indicators with name starting with A;
- `Maximum`. `Minimum` and `MACD`;
- Adds new unit test method to `CommonIndicatorTests`: `WarmsUpProperly`;
- Indicators unit tests inherit from `CommonIndicatorTests`.
Updated the Maximum Indicator with the suggested changes.
Updated the Minimum Indicator with the suggested changes.
Added the Slow Stochastic Indicator with given test case (looking to
improve the structure of the indicator).