v1.5.2 - bugfix & improvements
- bugfix: find now handles the empty string correctly
- bugfix: editor didn't work correctly with big files (over $1000 bytes)
- forth: the interpreter now prints "ok" after interpreting
- forth: abort" now inverts the text
- editor: open files with 'vi file' instead of 's" file" vi'
- editor: no longer possible to join lines by shift+backspace
in insert mode