turn off missing includes

[danmar]

I feel the missing includes warnings are annoying. it feels like we should disable those. in particular missingIncludeSystem.

[davidramnero]

so always filter out missingInclude and missingIncludeSystem? Or do we want an option to show them, or perhaps show them under certain conditions (maybe they work as intended when project files are taken into consideration?)

[danmar]

For now I suggest that they are never shown. It should work as intended when the project file is used.