Fixed block mapping in "count_for" arguments for python.

Merge pull request #9 from albertjan/fix/import-number

Fix/import number

Merge pull request #8 from trinketapp/merge-upstream-20180905

Upstream Merge 2018-09-05

Merge pull request #7 from trinketapp/merge-upstream-20171101

Upstream Merge 2017-11-01

Merge pull request #6 from trinketapp/merge-upstream-201707

Upstream Merge

Merge pull request #5 from trinketapp/conversions

Adds int, float, and str blocks.

Merge pull request #4 from trinketapp/list-in

Lists: in + not in

Removes numbers import. (Not supported by skulpt.)

Build.

Adds the floor division and modulo operators.