* Remove AppVeyor build status badge
Removed AppVeyor build status badge from README.
* Update README.md
* Update CONTRIBUTING.md
Updated the instructions for contributing.
* Fix for issue 1276 "Data corruption in the etl::bip_buffer_spsc_atomic" (#1277)
* Reproduce data corruption bug in the `etl::bip_buffer_spsc_atomic`.
* Fix data corruption bug in the `etl::bip_buffer_spsc_atomic`.
* Remove advance() on static spans
Since the size of a static span is constant, we can't reasonably
advance() on it.
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Co-authored-by: John Wellbelove <jwellbelove@users.noreply.github.com>
Co-authored-by: Sergei <sergej.shirokov@gmail.com>