number of decimals in .global.list.txt
I discovered mosdepth to give me more info about coverage in my bams. I noticed the 'total' in `.global.dist.txt` reaches as deep as the highest depth in the file, but the value next to it only has 2 decimals. Am I running it correctly? How do I increase the number of decimals in the fraction? E.g. below

```
total   131     0.00
total   130     0.00
total   129     0.00
total   128     0.00
total   127     0.00
total   126     0.00
total   125     0.00
total   124     0.00
total   123     0.00
total   122     0.00
total   121     0.00
total   120     0.00
total   119     0.00
...
total   23      0.00
total   22      0.01
total   21      0.01
total   20      0.01
total   19      0.01
total   18      0.01
total   17      0.01
total   16      0.01
total   15      0.01
total   14      0.01
total   13      0.01
total   12      0.01
total   11      0.01
total   10      0.02
total   9       0.02
total   8       0.02
total   7       0.02
total   6       0.03
total   5       0.04
total   4       0.05
total   3       0.07
total   2       0.13
total   1       0.34
total   0       1.00
```