Add field to store additional check flags (issue #303).
Conventional wrapper to get all unit flags (issue #303).
Use new wrapper to get all unit flags (issue #303).
Remove unused imports
Add support for rst flag
Compatibility for tests
Documet checks customization (issue #303).
Python brace format for same check as well, issue #345
Add tests for rst format
Simplify and cache getting all flags
Precalculate some strings at init time
Adjust to new API
Add option to ignore check for a subproject (fixes #303)
Document where all flags can be used