- Removed default value assingment when default is equal to default(T)
- Added Benchmarks for most types and repeated/packed arrays
- Left PopsicleList's list fields uninitialized util needed
- Changed CodedInputStream's repated/packed reader
- Changed Enum writers to simply cast to int
- Changed the WriteEnum to use object rawValue that provides .ToString() if needed
- Should be fully on par with original library for performance, gaining 2x-3x in some cases

support reading a field name rather than a field tag.

support reading a field name rather than a field tag.

Refactored 'speed' generated write of arrays to call Write???Array.  This may
have impacted speed write speeds for arrays of non-reference types due to the
use of non-generic IEnumerable and the subsequent boxing of value types.  This
could be addressed later if desired.

Slight refactoring of Extensions to support lookup by name, added compatibility tests for text and binary formats.