[breaking] Implement Iterator for owned ParserIterator (#1587) #890

Job	Run time
Build documentation	1m 14s
Bench	56s
Coverage	1m 19s
Check formatting	9s
Test minimal rust version	28s
Test (stable)	1m 16s
Test (beta)	1m 10s
Test (nightly)	1m 14s
Test (1.65.0)	1m 22s
Test (stable, --features "std")	1m 15s
Test (stable, --no-default-features)	1m 12s
Test (stable, --no-default-features --features "alloc")	1m 19s
Test (nightly, --no-default-features)	1m 1s
Test (nightly, --no-default-features --features "alloc")	1m 16s
	15m 11s

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