Vendor dependencies

notes-service/vendor/bitvec/doc/vec/iter.md

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+# Bit-Vector Iteration
+
+This module provides iteration protocols for `BitVec`, including:
+
+- extension of existing bit-vectors with new data
+- collection of data into new bit-vectors
+- iteration over the contents of a bit-vector
+- draining and splicing iteration over parts of a bit-vector.
+
+`BitVec` implements `Extend` and `FromIterator` for both sources of individual
+bits and sources of `T` memory elements.
+
+The by-value `bool` iterator is defined in `boxed::iter`, rather than here. The
+`Drain` and `Splice` iterators remain here in their original location.