Allow monolog v2 (#650)

.travis.yml

@@ -37,6 +37,6 @@ before_script:
 
 script:
   - composer validate
-  - phpunit --verbose
+  - vendor/bin/phpunit --verbose
 
 # vim:ts=2:sw=2:et

composer.json

@@ -25,7 +25,7 @@
 	"require": {
 		"ext-pcre": "*",
 		"intervention/httpauth": "~2.0",
-		"monolog/monolog": "~1.1",
+		"monolog/monolog": "~1.1|~2.0",
 		"mrclay/jsmin-php": "~2",
 		"mrclay/props-dic": "^2.2",
 		"php": "^5.3.0 || ^7.0",