Encode mixed numeric/alphanumeric data segments as one alphanumeric data segment if that's more efficient. Also add error check to NewWithForcedVersion(): Check if the content is too large for the requested QR code version.

Merge pull request #33 from vsenko/occasional-byte-encoding-efficiency-over-mixed-encoding

Merge pull request #34 from vsenko/export-NewWithForcedVersion

Merge pull request #29 from shvc/master

Export NewWithForcedVersion

Check if a single byte encoded segment would be more efficient than mixed encoding

add go.mod

Update README.md

Merge branch 'fix_scaling'

Add DisableBorder option to disable the QR Code quiet zone entirely, thus no more margins/borders. Defaults to borders for compatibility.

Fix optional tests using zbarimg

Fix scaling of QR codes in fixed sized images.

Fix scaling of QR codes in fixed sized images.

Merge pull request #20 from warbaby/img_set_performance

bgClr is always zero, no need to set