Propose sampling API changes (#24)
Propose sampling API changes (#24)

* Propose sampling API changes

* Add details about SamplingHint, Sampler interface and default samplers.

* Add details about start span operation.

* Update spelling text/0006-sampling.md

Co-Authored-By: Yang Song <1dd4e74cb6bb4b3863236aeb92cb612cf2e3da2a@users.noreply.github.com>

* Update spelling text/0006-sampling.md

Co-Authored-By: Yang Song <1dd4e74cb6bb4b3863236aeb92cb612cf2e3da2a@users.noreply.github.com>

* Add span name to the Sampler interface. Clarify how the sampling flags are exposed.

* Use ascii for personas

* Add spankind to the sampler input.

* Remove delayed span creation proposal from this RFC

* Remove unspecified type from sampler hint.

* Update text/0006-sampling.md

Co-Authored-By: Tristan Sloughter <8efd86fb78a56a5145ed7739dcb00c78581c5375@crashfast.com>

* Add clarification that Sampler is always called.

open-telemetry/oteps