2024-01-01: API Changes

Happy new year fellow developers! We start the year 2024 with a new release of v1.4.0 and there are some important changes I'm making to the APIs of the library.

• The PDF object that gets instantiated is now PyPDFForm.PdfWrapper, changed from PyPDFForm.PyPDFForm.
• Form widgets are now accessed via the PdfWrapper.widgets attribute, changed from PdfWrapper.elements.
• The JSON schema of the form data is now accessed via a new attribute called PdfWrapper.schema, changed from the old method of PdfWrapper.generate_schema().

All the old APIs will be persisted for half a year and then fully deprecated. Each of them will emit a DeprecationWarning when invoked, so it is advised that you make the switch before they are removed and start breaking your code.

Happy hacking!