implemented Installable class

.gitignore

@@ -1,5 +1,4 @@
 /.phpunit.result.cache
 /.idea/
-/composer.lock
 /vendor/
 /docs/example.php

composer.json

@@ -2,7 +2,8 @@
   "name": "zrnik/mksql",
   "description": "MkSQL is a tool for keeping your tables up to date with PHP code. You can use it in your project or as a database preparation in your integration tests.",
   "version": "v0.6.4",
-  "minimum-stability": "stable",
+  "minimum-stability": "dev",
+  "prefer-stable": true,
   "type": "library",
   "keywords": [
     "sql",
@@ -20,6 +21,12 @@
       "homepage": "https://stepan.zrnik.eu/"
     }
   ],
+  "scripts": {
+    "phpstan": "phpstan analyse",
+    "phpunit": "phpunit",
+    "phpunit:unit": "phpunit --testsuite unit",
+    "phpunit:integration": "phpunit --testsuite integration"
+  },
   "require": {
     "php": ">=7.4",
     "ext-pdo": "*",
@@ -28,7 +35,8 @@
   },
   "require-dev": {
     "tracy/tracy": "^2.7",
-    "phpunit/phpunit": "^9"
+    "phpunit/phpunit": "^9",
+    "phpstan/phpstan": "^0.12"
   },
   "autoload": {
     "psr-4": {