Custom requirements file for rtd
Minor change to set the solver used
Fixed nodal transmission
Fixed branch risk for transmission
FIXED MY ISSUE YO!

The issue arose because the solvers/pulp appear to have an issue when setting values
greater than or equal to zero. Instead you need to introduce a very slight
perturbation to ensure that the duals will be reported appropriately.

Now I need to build the functionality around this.
Plots, DataFrames, all the fun stuff.
But it's working, and that ist gut. BOOM Fuckers
Changed naming style of instances to be more specific
Added parser key for the dict names
Variable parser
Initial attempt at a working price DataFrame
Getting indexing working, could be better
Save df to instance, don't return it
Helper API function