since we don't need that. We're using the newer '%F{red}color%f' code
instead.
Also use `PS1` instead of `PROMPT`, as suggested at `man zshcontrib`,
under "Writing Themes”.
Refactor code.
in our custom themes.
With zsh starting at version 5.4, when using the `prompt_opts` array,
`nopromptsp` will be set unless the array contains a `sp`. This was
introduced in zsh at
43e55a9bcd (diff-bb10d67e7a8561b66a53a805f3c77a40R233)Fixes#209
The offender was `print -P`, where `-P` does [prompt
expansion](http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html#Prompt-Expansion).
I took the freedom to also change a few things:
Move the `add-zsh-hook precmd` up,
add `prompt_magicmace_` prefix to all function names,
add `COLOR_` prefix to all color global variables,
and move assignment to `PROMPT` to `prompt_magicmace_setup`.
Fixes#70, Closes#81
