Stable maintenance release of Qrack (debugging and style)

The past couple of months have seen almost exclusively style and debugging changes in Qrack. (We experimented with fixed-point math for certain applications, but it was only suitable on GNU/Linux, and the experiments mostly proved we are better leaving out fixed-point for now.) This release compared the current head of main branch to the state of Qrack about 2 months ago and whittled down the diff to a small and trustworthy set of bug fixes and adjustments according to style guide.

This release might constitute a relatively "complete" state of the core Qrack project, for a significant amount of time into the future. (Most future development is likely to focus on building out support for other quantum software frameworks.)

Happy Qracking! You rock!

Full Changelog:
v0.8.6...v0.8.7
unitaryfund/pyqrack@v1.30.20...v1.30.22
unitaryfund/qrack@vm6502q.v9.9.23...vm6502q.v9.9.28

sha1sum results:
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71fdfeb4b0f438a6e655cede67fbd2fc92bf93f3 pennylane_qrack-0.8.7.tar.gz