Update to tagged amphp/sql and amphp/sql-common

Author: trowski

composer.json

@@ -21,8 +21,8 @@
     "require": {
         "php": "^7.0",
         "amphp/amp": "^2",
-        "amphp/sql": "dev-master",
-        "amphp/sql-common": "dev-master"
+        "amphp/sql": "^1",
+        "amphp/sql-common": "^1"
     },
     "require-dev": {
         "amphp/phpunit-util": "^1",