Revised data storage to floats: more compact, less error prone, larger accuracy. 

Rewrote storetimeseriesdata to a class with multiple functions. Data is now also stored using one float (4 bytes) per sample. Previously stored data files should also be automatically converted to the new format and will also be backuped automatically. Saving data as txt files is discontinued.

Make a backup of stored data in /results before pulling to master!

Todo: documentation, 'getData()' functions for easy access