Created new UnwrapStrToUpper mutator

[zf2timo]

This PR:

• Adds new Mutator UnwrapStrToUpper as suggested in New @unwrap mutators ideas #514
• Covered by tests
• Documentation added: Added documentation for UnwrapStrToUpper mutator site#77

Replaces #535

[maks-rafalko]

Fixed code style

you can run make cs-fix to automatically fix all CS issues

[localheinz]

Ha, I think this test case doesn't apply - can we remove it?

[zf2timo]

Maybe it could be changed to "It does not mutate other strto calls"? Or adds this still no value?

[BackEndTea]

Maybe it could be changed to "It does not mutate other strto calls"?

👍

[zf2timo]

I don't get it. There is again something wrong.
I made theses steps to rebase onto the latest master:

$  git checkout master
$  git pull upstream master
$  git checkout feature/strtoupper-mutator-2edition
$  git rebase master
$  git push origin feature/strtoupper-mutator-2edition # <-- this one was blocked
$  git pull origin feature/strtoupper-mutator-2edition # <-- here I had to resolve a merge conflict in the UnwrapStrToUpperTest 
$  git commit
$  git push origin feature/strtoupper-mutator-2edition

[sanmai]

Try making a new branch out of current master, then ‘git cherry-pick’ your commits.

[zf2timo]

I will try it this evening.
But my executed commands where correct to rebase?

[localheinz]

@zf2timo

Here is how I usually keep a branch updated:

$ git checkout master
$ git fetch upstream
$ git merge upstream/master
$ git push origin master
$ git checkout my-branch
$ git rebase master

Sometimes I then need to resolve conflicts.

$ git push -f origin my-branch

[maks-rafalko]

superseded by #559