Updates the Sanitizers to handle whitespace anywhere in the selected
sanitizer mode
Fixes an issue where undefined sanitizer would not work (generator
expressions do not handle whitespace)
Updates documentation following some feedback, and drops some old
information (such as min CMake version)

Fix indentation and suppress all Python warnings

Reverts the indentation changes introduced in an earlier commit by auto
formatting tools. Changes the regex for the address suppressions so we
match Python 2 and 3