Merge pull request #4 from kfiku/master

Fix linter, make it backwords compatibility

linter.py

@@ -3,7 +3,7 @@
 
 class PhpStan(Linter):
     cmd = 'phpstan', 'analyse', '--errorFormat=raw', '--no-progress', '${args}', '${file}'
-    regex = r'^.*:(?P<line>[0-9]+):(?P<message>.+)'
+    regex = r'^(?!Note: ).*:(?P<line>[0-9]+):(?P<message>.+)'
     default_type = 'error'
     multiline = False
     tempfile_suffix = '-'