Requirements versions and bug fixes

• Update requirements versions

• Increase timeout for cmd run

• Fix 'k' argument type

Added default argument for password

• Added default argument for password.

Fix arguments in cmd

• Fixed types of arguments.

Added bootstrapping of edges, style and refactoring

• Added the --bootstrap_edges flag, which allows specifying the percentage of edges to be randomly removed
  from each PPI network (across networks at different PPI cutoffs).

• Added a style for proteins specified as bait.

• Refactored code and expose more methods for hierarchy generation from edgelists.

First release

• First release on PyPI.