Initial Commit
Create README.md
Merge in m190 printer driver

Merge branch 'master' of https://github.com/spearson78/arduino-m190.git
Reduce code size.
Use direct port manipulation to save 150 bytes
Calculate the next pins to fire while the current pins are fired to improve timing.
Update pins to match strip board version
Extract more entropy from analog value.
Keep pcl3 and display paper wallet running
Epson M-190 based wallet printer
Fix type in include
Move panic codes up by one so I can track down error code flashes more easily
Reduce code size
Extract 10 bits from the analog value.
Add Debiasing
Pass bits through basic NIST statistical tests
Combine multiple debiased bits with xor rather than sha to make RNG failures easier to detect.
reduce code size
Migrate to m190 based printing.
Update readme to new m190 based demo