v0.7.3

Fixes

• Fixed includes when used as CMake subproject (@benediktschmitt)
• Make finding zlib in-tree easier for CMake (@michaelmalonenz)
• Fixed Meson build under mingw32 (@neheb)
• Fixed -Wshadow warning (@Loobinex, @xtremeqg)
• Fixed references, typos in documentation (@ocpalo, @danieljennings, @timgates42)
• Other minor fixes and cleanup

Other

• Updated Meson zlib wrap to v1.2.13
• Removed debian subdirectory with outdated files