Type detection fix

v2.0.6

2.0.6

UPC & EAN detection

UPC_E will always be detected as EAN_8.
So the library detect EAN_13, EAN_8 and UPC_A

EAN_13 detection fix

[FIX] EAN_13 is no more detected when a barcode contains at least 13 contiguous digits but ONLY 13 digits.
[FIX] Do not send the last prefix in the read barcode.

v2.0.1

Contains the stand-alone JS version