TextTiling not support python 3

[talbaumel]

In line 315 clip = min(max(len(scores)/10, 2), 5) you should wrap this value with a int because python 3 division type is float.

Thanks

[alvations]

Related #965 #1537 and https://github.com/nltk/nltk/issues?utf8=✓&q=is%3Aissue%20is%3Aopen%20texttiling

I think this is a long standing bug that hasn't been fixed and the fix could be pretty simple. Let's try to patch this by the next release ;P

[zorroblue]

I would like to work on this :)

[e5pecial]

#1863
This bug was fixed :)

[alvations]

@e5pecial Thanks for the note!

@zorroblue Thank you for your interest, if you're up to contribute on something else, you can try browsing the goodfirstbug tag: https://github.com/nltk/nltk/labels/goodfirstbug . Or if you're interested to work on the related issues, there's #965 and #1537.

Resolved in #1863