Add option EnableTestfile (default false) to filter the testfile case

if enable_testfile is false, it will filter the lint case in *_test.go file

Fix some submit source load bug

Full Changelog: v1.0.0...v1.0.1

v1.0.0

Initial version: see README

Full Changelog: https://github.com/alingse/go-linter-runner/commits/v1.0.0