showing pytest warnings summary by default.

[aostr]

Hi,

Did the following

• added ``--disable-pytest-warnings` flag to let users disable the warnings summary.
• extended/changed unit tests for the changes in the pytest core.

Additionally, I decided to add myself to the authors.

[coveralls]

Coverage decreased (-0.007%) to 92.279% when pulling e04d9ff on aostr:master into c519b95 on pytest-dev:master.

[The-Compiler]

"Whitelisted pytest warnings" seems confusing - it sounds like some warnings are on a whitelist.

[aostr]

I will rephrase this once I get to a place with a stable internet connection :)

[The-Compiler]

With the goal of keeping commandline options low you mentioned in #1668, what's the reason of using a quite specific --disable-pytest-warnings instead of having a more generic -R which does the inverse of -r, so you could do -Rw to hide warnings, but also e.g. -Rs to hide skipped tests if someone did -rs in their pytest.ini but you really don't want to see them?

[aostr]

I don't have a preference on the commandline options here. I was talking to Holger about this, also about inverse options and the conclusion was that adding the --disable-pytest-warnings is what the discussion ended up with. Again, I can't really tell which one is better.
I think that I would chose the --disable-pytest-warnings here because it requires a little bit more typing to disable the warnings. It could push people to update the code as opposed to just typing -Rw. If they are just as lazy as I am :)

[coveralls]

Coverage decreased (-0.007%) to 92.279% when pulling b4e0fab on aostr:master into c519b95 on pytest-dev:master.

[nicoddemus]

This should be rebased on features.

@aostr could you please rebase into features, implement the requested changes and open a new PR? Unfortunately GH does not support changing the target branch of PRs.

Also, please add a line "Fix #1668" in a commit so that issue gets closed automatically when merged. 😁

[nicoddemus]

Nice, but also I think we should remove (w)pytest-warnings from the list as it no longer has an effect.