Avoid docs directory on vendor (#44)

docs: add ZPL commands reference (#42)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: andersonls <1561038+andersonls@users.noreply.github.com>
Co-authored-by: Anderson <andersonlsilverio@gmail.com>

Support other barcodes (#32)

* Support other barcodes

* Add drawBarcode test

* Fix QR, Code39 an others

^PW command support, custom units on height/width (#29)

Added width in setFont method (#3)

Co-authored-by: Anderson Luiz Silvério <andersonlsilverio@gmail.com>

Added orientation parameter do method drawCode128

Added new method drawCircle and support for the ^FR command.

Updated version in composer.json

Update composer.json

Update to support FPDF 1.8