new api ref sections. part 1

[samaid]

[pep8speaks]

Hello @samaid! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file docs/source/buildscripts/apiref_generator.py:

Line 71:29: W605 invalid escape sequence '*' Line 71:58: W605 invalid escape sequence '`'

Comment last updated at 2020-01-13 15:25:25 UTC

[AlexanderKalistratov]

@PokhodenkoSA could you please take a look on this PR?

[PokhodenkoSA]

@kozlov-alexey Please, reassign it. I think it is very old PR and you can close it.