Allow collision 'none'

[thiagofesta]

Currently we can't use collision: 'none'... because it sets to flip or fit.

I made a change on mine code to allow (just ifs)

[fnagel]

Mhh it should be possible to change option positionOptions.collision.

Related code snippet:

collision: o.positionOptions.collision || o.style == "popup" ? 'fit' :'flip'

So if optionpositionOptions.collision is set it will be used.

[fnagel]

Any feedback on this issue?

[fnagel]

Fixed in #255

[fnagel]

Please test and give feedback!

[fnagel]

Closed as should be resolved. Please re-open if not!