Scopy alpha v0.9

The alpha release of Scopy. Version 0.9.

General:

Oscilloscope:

• Added channel selectors for the XY plot. Scopy can now use any channel on either axis.
• Added the option to see/edit a math channels function.

Signal Generator:

• Improved import waveform from file feature. Scopy can import csv/wav/mat/bin files and scale them to the appropriate samplerate/amplitude/offset and phase.
  Known issues: The preview resampler distorts the signal when a low number of samples is imported to the signal generator. However the actual signal is sent correctly to the output.

Voltmeter:

• Added the peak hold functionality.

Logic Analyzer:

• No new features

Pattern Generator:

• No new features

Spectrum Analyzer:

• Loads/saves previous session

Network Analyzer:

• No new features