Converting Delavska Hranilnica bank statements to OFX

# This will create a `.ofx` file for each listed `.csv` file.
./dh2ofx.py ~/Dropbox/Finances/Statements/promet_*.csv

TODO:

• Parse Delavska hranilnica
• Parse N26
• Export DH to OFX
• Export N26 to OFX
• Testo for N26 to OFX script

OFX Spec: OFX Banking Version 2.3