Removed alpaca-py Package. Now Using Custom AlpacaAPI Class

[TexasCoding]

After the first week of testing on a $1000 paper account, the script worked mostly as intended. But there were more errors with data inconsistency than I expected. Some was just math errors, but a lot came from inconsistencies in market data or api errors. So I decided to remove alpaca-py and create my own class to communicate with Alpaca's REST API. This way I have more control over information and formatting.

I will eventually make the alpaca-api class I am working on into a package independent of this current project. But for now it will stay as a local class. Also I will begin creating test cases for the entire project. Been really busy in RL and rushed the code before testing as I only have a few hours each evening to work on this.