Benchmarks and README updated

Updated benchmarks and release notes

Bug fix

Bypass (ohler55#19)

* First bypass attempt with Validator

* Use index for buf iteration

* Use local var instead of on parser

* Oj parser and validator test updated for bypass

* Bypass gen parser

* WIP

* Unit tests

* release date set

Sen (ohler55#13)

* First SEN parse

* WIP

* Tests and share Number code

* Add SEN description

Filter objects (ohler55#12)

* Allow filters to iterate over objects

Develop (ohler55#9)

* notes updated

* README cleanup and better cmd/oj args

Merge branch 'develop'