* 1.2:
  fixed CS
  Update monolog provider for support permissions

This PR was submitted for the master branch but it was merged into the 1.2 branch instead (closes #931).

Discussion
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Update monolog provider for support permissions

Recently Monolog have an update commit b2e2530406737e658785e3b4e50135f297f49a16. Which add permission handling for log file.

Commits
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91b1cbc3 Update monolog provider for support permissions

This PR was merged into the 1.2.x-dev branch.

Discussion
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Move master to 2.0

This PR moves master to 2.0@dev. As there is a 1.2 branch, that should not be a problem for anyone ... except if you target dev-master in your composer.json, but hey, that's your choice.

Of course, it's not finished yet, but working on master is easier for everyone and future PRs.

TODO:

 - [ ] update documentation
 - [ ] update CHANGELOG

Commits
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5a4b265e upgraded to Pimple 2.1
322dbb5d updated route_factory service to use Pimple 2 factory method
fc8bbb62 switched to Pimple 2.0
c2421fab removed the flush call in the url generator service
5f9716d8 made the logger optional in all providers
349dcf97 moved everything related to the routing to a reusable service provider
e96f9be8 removed the request service in favor of the request_stack one
26e85436 changed charset to have a sensible default in all providers
34524a52 changed debug to have a sensible default in all providers
18b6050b fixed stupid typo...
0d10e89e fixed composer.json paths
a4b0b201 simplified composer names
6863b9a0 fixed composer.json files
67802eb2 added composer.json for Api and Provider
c341ca17 moved classes so that Silex\Provider can be used as a sub-tree split independently of eveything else
2d3a96bb changed type-hint to Pimple whenever possible
df568cb2 added BootableProviderInterface
1ba15a17 moved the provider interfaces under Silex\Api
eb5079be moved fake routes for the security service provider to a connect() method (with auto-registration)
3fdfa4be emptied the boot() method of the remember me service provider
27eb5267 moved Swiftmailer finish call to a proper listener
7bee6bfd adding a new interface for providers willing to register event listeners
613c4bfa removed obsolete comment
3b1ba69b removed conditions about the request stack as Symfony 2.4+ is required now
cd044b6f removed the deprecated Compiler class and the doc on the phar
de674e6d removed deprecated locale_fallback setting
24bce51f removed the deprecated TwigCoreExtension class
a4c7c51f fixed visibility
38c84add moved locale management to a locale service provider
88e44ea4 refactored session code to make it more reusable
9a32c0a9 bumped version to 2.0

moved classes so that Silex\Provider can be used as a sub-tree split independently of eveything else

* 1.2:
  Fix typos

* 1.1:
  Fix typos