PaSh v0.10

Biggest change

Removed libdash from the PaSh repo instead installing it through pip

What's Changed

• Run tests in Ubuntu 18.04 and 20.04 to completion by @mgree in #617
• Don't run PaSh Github CI on Ubuntu 18.04 due to deprecation by @angelhof in #618
• Temporarily remove Ubuntu 22.04 from the CI until it is debugged by @angelhof in #621
• Add a python script to contact the POSIX test server by @angelhof in #624
• Remove compiler/parser subtree, use libdash pip module by @mgree in #616

Full Changelog: v0.9...v0.10