ArduinoOTA library change

[NullMedia]

Modified callbacks to allow lambda with capture list.

[igrr]

Thanks for the pull request! Could you please squash and rebase all the changes?

[NullMedia]

Oh heck... I'd love to... Um, can I do that on the website? (New to this!)

[igrr]

I think you have to use git client to do this, command line or GUI.

[igrr]

Also please check the errors in examples:
https://travis-ci.org/esp8266/Arduino/builds/129147394#L770

[NullMedia]

Ok, working on it!

[codecov-io]

Current coverage is 22.64%

Merging #2013 into master will not change coverage

@@             master      #2013   diff @@
==========================================
  Files            19         19          
  Lines          3627       3627          
  Methods         326        326          
  Messages          0          0          
  Branches       1195       1195          
==========================================
  Hits            821        821          
  Misses         2507       2507          
  Partials        299        299          

Powered by Codecov. Last updated by 43fb139...2f0ece7

[NullMedia]

Ok, did I do it right? (sorry!)

[igrr]

Not exactly, see this explanation :) If you don't feel like using the command line client, don't bother, I'll squash that myself.
Could you do one more thing please — move definitions of THandlerFunction and other callback function types into the body of ArduinoOTAClass? THandlerFunction is a pretty common name and it would be good not to put it into global namespace. Thanks.

[NullMedia]

Made changes, and think I've merged them now... any further attempts at rebasing just lead to errors... (error: could not apply xxxx). Unfortunately never used git before, learning lots today! Thanks.