Feature request: Ignore spaces before command

[rieje]

Feature request: ignore spaces before command. There are reasons to ignore spaces before a command, such as HIST_IGNORE_SPACE, but in these situations the purpose of this plugin is still useful so should continue to remind you of aliases you could have used.

Unrelated, by Zsh's WARN_CREATE_GLOBAL complains of:

_flush_ysu_buffer:4: scalar parameter _YSU_BUFFER created globally in function _flush_ysu_buffer

Is this avoidable?