Initial commit
loadFile function implemented
saveData, processData, lowPass, notch, highPass and movingAverage functions implemented
derivativeFilter function implemented, filters.c renamed to iir.c
initPeakLimit function implemented
detectPeak function implemented
calcBpmCounter implemented
getBpmData, getBpmCurrent, getBpmAverage functions implemented
getBpmStDev and initArray functions implemented
Unfinished optimization of functions
Revert "Unfinished optimization of functions"

This reverts commit 06ee803d542a389ec2152fbb0c5690098e141cfc.
Commented filters
Reimplemented prevoius changes
Made small fromat changes
Optimized code
Merge branch 'reoptimize'
Implemented checkBpm function
fixed checkBpm, renamed functions, added comments
BPM minimum and maximum calculation implemented
Incresased filter precision and changed form to cascade, enabled filtering