More New PHP Fixers

Further to our changes on Monday, we have now added 10 more fixers, without making any preset changes. The new fixers are: blank_line_before_cases, blank_line_before_do, blank_line_before_exit, blank_line_before_for, blank_line_before_goto, blank_line_before_if, blank_line_before_include, blank_line_before_switch, blank_line_before_while and blank_line_before_yield. Full details of these fixers is available at https://docs.styleci.io/fixers, as usual.