Add region state

[StreakyCobra]

There is two commits:

• One correct the sorting in the packages list of spacemacs distribution (I was on it and syl20bnr is preparing some merge so I post it there, can be cherry-picked alone)
• The other one add region-state package in the spacemacs distribution:

[syl20bnr]

Spaceline already displays this information ;-)

[StreakyCobra]

The number of lines yes, not the number of chars. But indeed, in may be redundant for a not so wide usage.

[syl20bnr]

The number of chars can be added.
One advantage of this package is that it is always visible, the mode-line segment may be invisible. OTOH we could move the segment to the left.

[StreakyCobra]

It's up to you, both are fine for me.

[StreakyCobra]

From @TheBB on gitter:

I don't mind moving it out of the modeline actually.
Segments that don't show still cost in terms of performance. And the modeline updates quite frequently, and spaceline is already not so fast.
May need to optimize a bit.

[syl20bnr]

Ok let's remove it from spaceline and use this package instead

[StreakyCobra]

Updated to remove the spaceline segment.

I just noticed that the message in the echo area is overridden sometimes, like by the function definition under the cursor in elisp files, so… the current situation is maybe better. I let you decide on this, close the PR if we keep the current way.

[TheBB]

Since spaceline does this and is faster now, I think it's safe to close this PR. Thanks!