v0.8

• Now has menu for sample related options, e.g. calculating heart rate
• Now saves configuration file with last used parameters for making life easier
• Now can load .csv file of a sample to make testing without prototype possible (although I do need to make an emulator soon enough)
• Now can save the sample to a .csv
• Now can re-open a sample if the plot was closed
• An extremely thorough cleaning of the code
  And most likely more that I've forgotten =)