Explain why we "probably want imagemin-optipng instead."?

[Pomax]

The readme opens with "You probably want imagemin-optipng instead." but no explanation as to why. Was it renamed? Was it moved? Was a new projected started and this one's now on life-support? Why would we probably want imagemin-optipng? =)

(and can that information be added to the README.md?)

[scmx]

imagemin-optipng uses optipng-bin so it's just an advice to probably install that instead

[Pomax]

If it needs explanation, that explanation should be in the README.md, not left as guessing game. README's should not have "probably": if there are use cases in which a different technology is advised, it should explicitly state when it is appropriate to use this CLI tool, and when it is advised to not use it.

In both American and British, in lieu of a more detailed explantion "you should probably use X" means "you should use X" with the "probably" merely there to soften the command.