Improve Mac support and clean up dependencies

[m-reuter]

On the mac we only have older bash versions. Installing a newer bash 4 or 5 via brew is possible, but sub-scripts still include /bin/bash via the # first line directive (reported here #528 ). Modifying that line could break portability to other OSs (maybe #!/usr/bin/env bash is portable but poses a privilege escalation security threat). Therefore we replace all bash 4.* functionality with alternatives that are supported with older bash 3.1.

• |&gets replaced with 2>&1 |
• @Q expansion gets replaced with printf %q(available since bash 3.1)
• requirememnts.mac.txt gets updated to newer dependency versions (no more torch dev required etc) in accordance to updated requirements.txt. It also now allows version ranges, making it less repeatable, but more flexible.
• pyproject.toml now includes some missing dependencies and also bumps versions in accordance with requirements.txt
• INSTALL.md text gets updated accordingly for mac native install (no newer bash needed)
• deprecated panda delim_whitespace? gets updated to sep='\s+' (this is really independent of the mac version).

[dkuegler]

All else seems fine.