Case Sensitive UUID

[kevincar]

The problem
server.services is currently a dictionary, accessed by a string representation of the associated UUID. This can cause issues if the UUID was initially supplied as all upper-case or all lower-case. Regardless of how it is supplied, an interfaces should be supplied that standardizes the casing.

Reproduction
Can be readily reproduced on the windows branch when running against the example/server.py

Expected behavior
A UUID, whether provided in upper- or lower-case, should be handled appropriately. PyTests should account for this

Desktop (please complete the following information):

• OS: Windows (But likely could apply to macOS as well)