Showml

What's Changed
* Fixed ShowML logo by hasnainroopawalla in https://github.com/hasnainroopawalla/ShowML/pull/20


**Full Changelog**: https://github.com/hasnainroopawalla/ShowML/compare/v1.5.0...v1.5.1

What's Changed
* Updated readme by hasnainroopawalla in https://github.com/hasnainroopawalla/ShowML/pull/19


**Full Changelog**: https://github.com/hasnainroopawalla/ShowML/compare/v1.4.1...v1.5.0

- Aesthetic changes to the README.

- Added a simulation for Cellular Automaton ([Conway's Game of Life](https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life)).
- Added the following classes: `Button`, `Color`, `GameWindow`, `GameOfLife`, `Grid`, `Event`, `Action` and `EventHandler`.
- Moved `Regression` to the `linear_model` package.
- Added a dependency for `pygame`.
- Added an example usage in ` examples/` for running the simulator.

- Updated the README
- Removed the `training_error()` method
- This makes the `Loss` class fully abstract

- Fixed typo: `MeanSquareError` -> `MeanSquaredError`