[QT-644] Concurrently decode scenarios if possible

[ryancragun]

Fix incorrect logic that led to us always decoding scenarios using the
serial method. Now we'll actually utilize all of our cores when decoding
a scenario that has a matrix and our machine has more than 2 CPUs.

• Fix concurrency path bug
• Fix a data race on the eval context during decode
• Fix our concurrent wait logic
• Improve collection workers in concurrent decode
• Bump version
• Please new linters

Signed-off-by: Ryan Cragun me@ryan.ec

Checklist

• The commit message includes an explanation of the changes
• Manual validation of the changes have been performed (if possible)
• New or modified code has requisite test coverage (if possible)
• I have performed a self-review of the changes
• I have made necessary changes and/or pull requests for documentation
• I have written useful comments in the code