Add --Header / -H

Let's you specify that the input has a header with --Header / -H.

Add -d for specifying delimiter

Add -d for specifying delimiter, including escaped (currently only \t, which is the default anyways).

Add -k column selector

This adds -k column selector.

Make -s output sort | uniq -c | sort compatible

# not plot at all, just replace: sort | uniq -c | sort -n
$ echo a3 b2 b2 a3 a3 c4 c4 c4 c4 | tr ' ' '\n' | hist -n -s -
2       b2
3       a3
4       c4

Change --size to --geometry

Change --size to --geometry to avoid clash in -s.

hist-cli 0.4.1

Use new fixed y-axis of textplots.

0.4.0

hist-cli-0.4.0

Improve example section