Add additional reply parsing tests
BREAKING (alpha API): simplify reply parsing, remove `with-mparser`, remove parser composability

NOTE: The breaking changes in this commit apply only to an API already marked
as alpha - therefore there will be no breaking (+1.0.0) version number bump.

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Some reply parsing features (specifically multi-bulk parsing and parser
composability) have been more or less vestigial since the introduction of
the `with-replies` command.

By removing these unnecessary features altogether, the conceptual model is
simplified and potential interactions (e.g. parser composition and parser
fn metadata) are minimized.

Note that the reply parsing API continues to be ALPHA as of this commit.
Bump version (1.11.0)
Merge branch 'dev'