Reconfiguring dependencies in the Pipfile

[purefunctor]

Rationale

pipenv has the ability to separate development dependencies from the project dependencies. This issue aims to resolve the separation between these two groups of dependencies. For future reference, dependencies can be managed like the following:

$ pipenv install discord.py    # To install project dependencies
$ pipenv install --dev pylint  # To install development dependencies
$ pipenv uninstall requests    # To remove dependencies