Scopy alpha v0.10

The alpha release of Scopy. Version 0.10.

General:

• Implemented Debugger instrument
• Improved calibration
• Added Travis-CI build scripts for macOS and Linux

Oscilloscope:

• Implemented AC coupling
• Implemented probe attenuation

Signal Generator:

• Improved signal preview for signal generator
• Improved wave file support
• Implemented trapezoidal waveform
• Implemented noise generation

Voltmeter:

• No new features

Logic Analyzer:

• No new features

Pattern Generator:

• No new features

Spectrum Analyzer:

• No new features

Network Analyzer:

• Implemented zooming and panning of the nyquist plot