Django-qr-code

* Add support for `ECI mode` to control bytes encoding.
* Fix handling of `micro` QR code option when using URLs to serve image via `{% qr_url_from_text %}`.
* Fix handling of `cache_enabled` option when using URLs to serve image via `{% qr_url_from_text %}`.
* Fix handling of `url_signature_enabled` option when using URLs to serve image via `{% qr_url_from_text %}`.

* Change encoding from URL-safe Base64 to standard Base64 for `text` query argument (used for serving QR code images).
* Fix 31 by passing the border parameter for segno.QRCode.save.
* Ensure compatibility with Django 3.2.
* Drop support for Django 3.0.

* Change encoding from URL-safe Base64 to standard Base64 for `text` query argument (used for serving QR code images).
* Introduce setting `SERVE_QR_CODE_IMAGE_PATH` to configure the path under which QR Code images are served.
* Reorganize and improve documentation.
* Fix 23
* Introduce usage of type hints.

* Update the install_requires after the move from qrcode to Segno.

* Remove dependency to Pillow / qrcode
* Switch to [Segno](https://pypi.org/project/segno/) for generating QR Codes
* Add support for QR Codes with multiple colors
* Add support for Micro QR Codes
* Stable SVG format for QR code between 32-bit and 64-bit architecture (19)
* Use hyphens in URLs (16)
* Add support for Python 3.9

* Fix local testing script.
* Fix date of release 1.3.0 in readme.
* Code cleanup.