Check property declarations more thoroughly

- `checkPromoted` will check promoted properties too.
- `enableMultipleSpacesBetweenModifiersCheck` checks multiple spaces between modifiers

Close #10

Author: spaze

composer.json

@@ -11,7 +11,7 @@
 	],
 	"require": {
 		"php": "^7.2 || ^8.0",
-		"slevomat/coding-standard": "^8.0"
+		"slevomat/coding-standard": "^8.1"
 	},
 	"autoload": {
 		"psr-4": {"Spaze\\CodingStandard\\": "src"}

src/ruleset.xml

@@ -114,7 +114,12 @@
 		</properties>
 	</rule>
 	<rule ref="SlevomatCodingStandard.TypeHints.LongTypeHints"/>
-	<rule ref="SlevomatCodingStandard.Classes.PropertyDeclaration"/>
+	<rule ref="SlevomatCodingStandard.Classes.PropertyDeclaration">
+		<properties>
+			<property name="checkPromoted" value="true"/>
+			<property name="enableMultipleSpacesBetweenModifiersCheck" value="true"/>
+		</properties>
+	</rule>
 	<rule ref="SlevomatCodingStandard.TypeHints.ReturnTypeHintSpacing">
 		<properties>
 			<property name="spacesCountBeforeColon" value="0"/>