What features make it a game changer for you? For me it felt like just a small quality of life improvement, but I've never delved that deeply into its feature set.
- Hints and completions behind the Tab key
- Syntax highlighting as you type, along with auto-indentation
- Dynamic introspection with "?" and "??"
- Being able to run shell commands with "!" and capturing their output with "!!"
- Magic commands behind "%" and "%%"
- File system navigation