1.6.2

Changes in this release

• PackageInfo.g: link to Mathjax manual by default by @fingolfin in #554
• PackageInfo.g: link to Mathjax manual by default by @fingolfin in #558
• ci: change master to main on azure by @james-d-mitchell in #567
• Rewrite buildsystem to use Makefile.gappkg by @fingolfin in #566
• Update two M4 files, correct a comment by @fingolfin in #568
• Fix some typos found by codespell by @fingolfin in #569
• Use same URL as in my other packages by @olexandr-konovalov in #572
• Avoid src/ prefix for GAP headers by @fingolfin in #571