Improve QrackCircuit

QrackCircuit has been improved with further light-cone optimizations. Now, when gates are combined to produce identity operator somewhere mid-circuit, only gates in the light cone are checked for further composability past the identity gate, and, as gates in the light cone fail to produce any further improvements past a certain depth, the blocked wires are removed from the light cone for further optimization checks. (These improvements are inspired by consideration of "directed acyclic graph," "DAG" data structures.)

Full Changelog:
unitaryfund/qrack@vm6502q.v9.13.8...vm6502q.v9.13.9
v1.34.7...v1.34.8

sha1sum results:
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