…paces and/or non english-symbols (#194)

* changed repo name in the composer

* added path to the symlink RuntimeException exception-message

* added more and better typehints into PHPDocs above methods

* Regex didn't count for the rare case when the diff has quotation marks around the filenames (file names with non-english symbols for example)

* replaced uninitialized $entry variable with $element

* removed getRevisions() since revisions isn't a part of the Diff object

* removed unused $fullname in the getCommit() method

* - added more type hinting
- introduced data property to Tag
- added .idea to .gitignore

* - changes that were requested by "
continuous-integration/styleci/pr"
- fixed composer.json

* upped the number of characters that are shown to get a more verbose exception

* added type annotation for file in the Diff class

* - fixed parser to properly work with files
- with umlauts added a test
- made changes @lyrixx suggested

* - made fixes for @continuous-integration/styleci/pr

* - made one more fix for @continuous-integration/styleci/pr

* - switches quotes for @continuous-integration/styleci/pr

* added trailing \n to the gitignore

* added tests for empty commit messages

* cosmetic changes for continuous-integration/styleci/pr

* added phpspec/prophecy to composer-json, so the tests pass

* added phpspec/prophecy compatibility with php 5.6

* sorted composer.json alphabetically and removed "^1.15"

* added code from PR #151

* added user credentials which are needed for the next commands

* stylistic changes to satisfy style-ci

* moved user credentials to the top

* stylistic changes to satisfy style-ci

… cloning it. (#202)