Version 0.13.0

Changes

• Use "aotools" packages instead of "AOSimLib" (aotools packaged with Soapy)
• Move pupil mask loading and formatting to separate function in Simulation
• Update GUI to use PyQt5 if available
• Can set a SH WFS pxlScale, which overrides the FOV parameter
• Improve extended SH WFS implementation
• Fix bug in infinite phase screen covariance calculation
• Bug fixes
• Docs updates
• Update to be compatible with NumPy 0.12 - indices must be ints