Code style

• Read CODING-STYLE.md

Developing hints

• No excess tests: one or two simple tests per small fix/feature are usually fine, unless you really need to be exhaustive
• If you need to craft a PDF file for test fixture, don't create it on the fly with text writing operations but precompute it as a constant string;
• Avoid Catch SECTION(s) in tests, if possibles
• No long, repetitive comments. If you need to repeat a comment, it must be a one/max two lines