ActiveState/applib — pull request #19 by srid (2014-06-24 00:19:56+00:00)
Title: supress rewriting of progress bar if redirecting to file

fixes #17

```
$ bin/python demo-app.py --foo think | tee /dev/null
[ ] 1% 1/200
[====> ] 26% 51/200 (5s; 14s left)
[=========> ] 51% 101/200 (10s; 9s left)
[==============> ] 76% 151/200 (15s; 4s left)
[===================>] 100% 199/200 (19s)
$
```