Images can now be embedded as CMYK - Docs for using Pygal & FastAPI - Various bugfixes

Added

• FPDF.image(): CMYK images can now be inserted directly by passing them into the image method. Contributed by @devdev29
• documentation on how to embed graphs and charts generated using Pygal lib: documentation section - thanks to @ssavi-ict
• documentation on how to use fpdf2 with FastAPI: https://pyfpdf.github.io/fpdf2/UsageInWebAPI.html#FastAPI - thanks to @KamarulAdha
• FPDF.write_html(): <table> elements can now be aligned left or right on the page using align=
• FPDF.write_html(): a custom font can now be specified for <code> & <pre> elements, using the new optional parameter pre_code_font

Fixed

• FPDF.table(): images no more overflow cells
• FPDF.table(): text overflow in the last cell of the header row is now properly handled
• FPDF.table(): when align="RIGHT" is provided, the page right margin is now properly taken in consideration

Changed

• FPDF.write_html() does not render the top row as a header, in bold with a line below, when no <th> are used, in order to be more backward-compatible with earlier versions of fpdf2 - cf. #740

Deprecated

• the split_only optional parameter of FPDF.multi_cell(), which is replaced by two new distincts optional parameters: dry_run & output