Unbreakable!

Many thanks to @eumiro & @fbernhart for their contributions to make fpdf2 cleaner!

Check this blog post for an explanation on this release name.

Added

• FPDF.unbreakable : a new method providing a context-manager in which automatic page breaks are disabled.
  cf. https://pyfpdf.github.io/fpdf2/PageBreaks.html
• FPDF.epw & FPDF.eph : new @property methods to retrieve the effective page width / height, that is the page width / height minus its horizontal / vertical margins.
• FPDF.image now accepts also a Pillow.Image.Image as input
• FPDF.multi_cell parameters evolve in order to generate tables with multiline text in cells:
  • its ln parameter now accepts a value of 3 that sets the new position to the right without altering vertical offset
  • a new optional max_line_height parameter sets a maximum height of each sub-cell generated
• new documentation pages : how to add content to existing PDFs, HTML, links, tables, text styling & page breaks
• all PDF samples are now validated using 3 different PDF checkers

Fixed

• FPDF.alias_nb_pages: fixed this feature that was broken since v2.0.6
• FPDF.set_font: fixed a bug where calling it several times, with & without the same parameters,
  prevented strings passed first to the text-rendering methods to be displayed.

Deprecated

• the dest parameter of FPDF.output method