* Adds support for switching encodings midstream
* Adds support for parameter cardinality modifiers
* Adds support for reading argument groups
* Adds support for length-prefixed e-expressions
* Optimizes and simplifies macro evaluation
* Simplifies struct expansion logic
* Adds static analysis optimizations to template evaluation
* Adds support for lazily evaluating top-level e-expressions
* Adds more Ion 1.1 encodings to the `read_many_structs` benchmark
* Shrinks many data types

Switching encodings midstream, initial support for encoding directives

ParameterCardinality, transcribe raw binary 1.1 to text, version switching

refactor transcription, groundwork for variadic params

Adds non-required cardinalities

Read support for binary arg grouping bitmap

binary reader support for arg groups

minor optimizations

allows benchmarks to manually register templates

reworked e-expr parsing

Binary Ion v1.1 uses &'top for value, eexp types

minor optimizations 2

clippy suggestions

per-type read paths for string, int

better

Reworks EncodedValue offset calculation to save on size

Adds support for length-prefixed e-exprs

simplified struct iteration, rewrote eexp parsing

further streamlining of read_sequence_value_expr

Optimization for singleton template macros

Reorganizes read_many_structs benchmark

OneShotMacroEvaluator, EExpArgIterator trait, fixed ion-tests integration

upgradeable MacroEvaluator (OneShot -> Stacked)

Using new macro evaluator at root level

Struct expansion uses new macro evaluator

Optimizations for macro expansion

* Adds `read_resolved` method to the LazyExpandedValue level so
  all Ion-type specific logic can be handled once instead of twice.
* `MacroExpansion::initialize` now delegates the entire implementation
  the invocation's source kinds instead of dispatching on every method call.
* Universal singleton macro expansion optimization support.

Revised TemplateCompiler storage

Shrank macro evaluator sizes

simplified macro evaluation logic

+"optimal path" eexp benchmark, more method inlining

s/quote/literal/, clean up read_many_structs benchmark

remove erroneous profile json

Adds try_next! macro for Option<Result<_>> early returns

cleanup

clippy suggestions

fix doc links

more clippy suggestions

…ase` fn