scaladoc tense harmonization

[tnielens]

I noticed mixed used of present and imperative tense in the scala doc.
Is there a preference?

[pityka]

I have no preference, sorry about the mixed use, I did not notice.

[tnielens]

No need to be sorry. Just wanna suggest to pick one. I'd be happy to submit tense corrections here and there. Imperative is quite common.