Merge remote-tracking branch 'origin/master'

# Conflicts:
#	lib/Assert/Assertion.php
#	lib/Assert/Assertion/ArrayTrait.php
#	lib/Assert/Assertion/BoolTrait.php
#	lib/Assert/Assertion/CallableTrait.php
#	lib/Assert/Assertion/ClassTrait.php
#	lib/Assert/Assertion/CompareTrait.php
#	lib/Assert/Assertion/EnvironmentTrait.php
#	lib/Assert/Assertion/FileSystemTrait.php
#	lib/Assert/Assertion/NumberTrait.php
#	lib/Assert/Assertion/ObjectTrait.php
#	lib/Assert/Assertion/StringTrait.php