allow for any pre-1.0 version of apiclient-services (googleapis#1260)

Author: bshaffer

composer.json

@@ -8,7 +8,7 @@
  "require": {
  "php": ">=5.4",
  "google/auth": "^1.0",
- "google/apiclient-services": "^0.12",
+ "google/apiclient-services": "~0.13",
  "firebase/php-jwt": "~2.0|~3.0|~4.0|~5.0",
  "monolog/monolog": "^1.17",
  "phpseclib/phpseclib": "~0.3.10|~2.0",