[BUG] Sort should be numeric

[pandiloko]

Sort should be numeric instead of alphabetic

when sorting by memory, threads or CPU 15 comes after 2 because (apparently) it uses alphabetic sorting.

To Reproduce

This happens if you have a number that comes alphabetically before but has a higher absolute value than other. (e.g. 15 and 2 or 25 and three).

Expected behavior

should behave like coreutils sort -n (numeric sort)

Screenshots

Info (please complete the following information):

• Bashtop version: 0.9.25
• (Linux) Linux distribution and version: Ubuntu 18.04 updated
• Terminal used: Konsole
• Font used: Hack NerdFont Regular
• Bash version, bash --version (version 4.4 or above is required): 4.4.20
• Locales: output of locale -v

LANG=C.UTF-8
LANGUAGE=
LC_CTYPE="C.UTF-8"
LC_NUMERIC=C.UTF-8
LC_TIME=C.UTF-8
LC_COLLATE="C.UTF-8"
LC_MONETARY=C.UTF-8
LC_MESSAGES="C.UTF-8"
LC_PAPER=C.UTF-8
LC_NAME=C.UTF-8
LC_ADDRESS=C.UTF-8
LC_TELEPHONE=C.UTF-8
LC_MEASUREMENT=C.UTF-8
LC_IDENTIFICATION=C.UTF-8
LC_ALL=

Additional context

contents of $HOME/.config/bashtop/error.log

New instance of bashtop version: 0.9.25 Pid: 5478
PSUTIL ERROR! Command: get_disks(exclude='squashfs')
not sure how to interpret line '   7       0 loop0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n'