Remove broken iOS3 support

[steipete]

With the transition to ARC, CocoaLumberjack lost support for iOS3.
I see that as a good sign and an opportunity to delete A LOT of code, everything related to GCD_MAYBE_AVAILABLE.
We know can be sure that GCD is available!

[robbiehanson]

Good point! I've been looking forward to being able to do this.

[steipete]

Oh I can imagine ;)

Oh and your project is great. Use it everywhere. Just updated my bridge to NSLogger, the two work great together! https://github.com/steipete/NSLogger-CocoaLumberjack-connector (also added a CocoaPod spec)

[robbiehanson]

Glad you like the project!

I just stripped out all the GCD_MAYBE_X stuff, and pushed the changes.

[steipete]

wohoo, lots of red stuff here! You can reference a issue in your commit (eg. closes issue #9) so it would show up here automagically. thanks!