* To provide a way to adjust deprecations without touching standard.
* Provide an option defining the path to lookup the configuration files.
* Parse yaml files containing deprecations.

Relates: #33

* Remove line breaks from output, as syntastic will not parse them.
* It's up to the report to format the messages, not the Sniff.

Relates: #33

* Use a single generic sniff with configuration.

Relates: #33

* Provide a generic sniff with configuration (property) containing all
  deprecated calls.
* Check function calls and provide warning with information.

Relates: #33

Relates: #33

* As we use it in parent class, define it there.

* Adjust some comments and formating.
* Add missing, but used, properties.
* Shorten variables used only once.

Resolves: #36

* Process extends as before.
* Process all interfaces in addition, not only the first one.

* Make mapping file path configurable

Relates: #36, #37

* As we already adjust function, trait and interface definitions, we now
  also migrate the usage of the old versions.
* This is done in second run, as mentioned in adjusted Readme.

Relates: #36

* Add configured vendor in message for easer migration in IDEs (by
  hand).
* Remove non existing function from checks.

Relates: #36

* Check for string concatenation instead of earlier more stupid.

Relates: #36

* Prefix with configured vendor if first argument does not start with a
  string already.

Relates: #36

* As we migrated trait to class, all sniffs have to extend instead to
  use the new class.
* Also make PhpCsFile import and type hints the same across all sniffs.

Relates: #36

Relates: #33

* To follow CGL

Relates: #33

* Also fix check whether another line should be added after namespace
  definition.

Relates: #36

FEATURE: Make path to mapping file configurable

* This way one can define the path in his own ruleset.xml

Feature/cleanup

* Insert missing namespace, based on existing class name.
* Allow configuration of Vendor to use.

* Will not adjust uses of the class.
* All other sniffs are broken right now, they need to be adjusted to
  new abstract class.

Relates: #36

Relates: #33

Relates: #33

* To follow CGL

Relates: #33

BUGFIX: Fix bug introduced in e6e372f8

change composer dependency to right path of phpcs

* Allow static calls to find class name before $stackPtr.

Feature/22 is a checks

TASK: Refactor code

Resolves: #22

* As we sometimes have to fix classnames inside a string, move this
  common work to trait.
* Also make classname "free" of string quotes inside the check, not the
  concrete sniffs.

Feature/refactor common process method

FEATURE: Provide sniff for catch statements