Updated Beta Release

• Vessel mobilization added to all vessels in all installation modules.
  Defaults to 7 days at 50% day-rate.
• Cable lay, bury and simulataneous lay/bury methods are not flagged as
  suspendable to avoid unrealistic project delays.
• Cost of onshore transmission construction added to
  ExportCableInstallation.
• Simplified ArrayCableInstallation, ExportCableInstallation modules.
• Removed pandas from the internals of the model, though it is still useful
  for tabulating the project logs.
• Revised package structure. Functionally formerly in ORBIT.simulation or
  ORBIT.vessels has been moved to ORBIT.core.
• InstallPhase cleaned up and slimmed down.
• Environment and associated functionality has been replaced with
  marmot.Environment.
• Logging functionality revised. No longer uses the base python logging module.
• Vessel now inherits from marmot.Agent.
• Tasks that were in ORBIT.vessels.tasks have been moved to their
  respective modules and restructured with marmot.process and
  Agent.tasks.
• Modules inputs cleaned up. type parameters are no longer required for
  monopile, transition piece or turbine component definitions.
• Removed old/irrelevant tests.

Initial Beta Release

v0.3.3

Fixing install.