Changelog 📋

Add hyperlink to the free educational license of IntelliJ to section "IDE" in category "Java"

Add 4 more entries to the glossary (Bytecode, Java-Stack, JIT, SOLID-Principles)

Add note to section "What is the DTD?" in category "HTML"

Some minor spelling and grammar corrections as well as minor content corrections or additions

Add chapter 0 to 3 to category "HTML"

Add chapter 0 to 16 to category "Java"

Add chapter "Vectors" and "Matrices" to category "Math"