holman/spark — pull request #71 by ncanceill (2014-02-08 14:31:05+00:00)
Title: Add multiline option

**NOT SAFE TO MERGE** [Still testing]

This new feature allows to display the graph on several lines, as requested in #55. The default is 1 line to preserve compatibility, and the height can be set using the `SPARK_HEIGHT` variable as follows.
```sh
SPARK_HEIGHT=3 ./spark 16 10 7 4 6 7 10
█
██ █
███▄███
```

**Caveats:**
* It only works with a proper fixed-size font
* There is always a small line skip

Feel free to improve, I am not an expert.