[WIP] rename plotting functions and improve their documentation

[Datseris]

bit more concistent names:

recurrencetext, recurrencescatter, recurrenceplot

also exporting recurrencescatter, because I want to put this to the docs as well.

Closes #58

[heliosdrm]

What about renaming recurrencescatter as recurrencecoordinates ?

Perhaps recurrencetext and recurrenceplot might have more meaningful names as well. recurrencetext is not that much intuitive, and both are "plots" somehow...

[Datseris]

Honestly, I very much dislike the fact that we include recurrence in the names of all these functions. The recurrence part should be implied anyway from the input type.

Can we do better I wonder? Of course we have to avoid names like only scatterplot etc. that may conflict

[heliosdrm]

I was thinking nearly the same while I was coming home. What about:

• coordinates instead of recurrencescatterplot
• image instead of recurrenceplot
• And recurrenceplot is left available for the Unicode representation, which is actually the only real "plot".

[Datseris]

My only suggestion is imagematrix instead of image (because it does not produce an image).

[heliosdrm]

Or maybe grayscale?

[Datseris]

That was a lot of work! 👍

Naaah, mostly Atom's FInd All -> Replace All magic :)