v1.3.0a1

• Add support for pear package 2.0 format
• Remove support for pear package 1.0 format
• Fix bug #9501, doller signs disapear if preg_match is used.
• Fix bug #9783, don't remove variable which values follow the variable pattern
  To allow backwards compatbility an option preserve_input is added.
  If it is false, the old behaviour will be used and therefore those values will be deleted.
  Default is true, so new behaviour.
• Fix bug #9853, problems with dots in placeholders or blocknames
• Add option 'preserve_input' to only remove unkown variable that were present during setTemplate or lodaTemplatefile
  which is the behaviour before 1.3.0a1
• Fix bug #13935 - docblock is wrong
• Improved PHPCS (Request #15039)