* docs: updated code of conduct to the lates version of the contributors covenant
* docs: fixed markdown issues in changelog
* docs: updated contributors guide
* docs: fixed linting errors in docs
* README.md COOKBOOK.md: minor fixes
* simplify language
* ECOSYSTEM: create a few categories
* Examples: log port listening to
* upgrade bootstrap 3 -> 4 in examples
bootstrap 4 is slightly smaller then 3.2.0
so it should also help load examples faster
* categorize 0.19 items a little differently
surface user/consumer changes first
