Merge branch '2.15' into 2.16

* 2.15:
  OrderedImportsFixer - fix for trailing comma in group
  BlankLineBeforeStatementFixer - handle comment case
  Fix: MethodArgumentSpaceFixer must run after MethodChainingIndentationFixer
  DX: Check trailing spaces in project files only
  Trim path
  YodaStyleFixer - handling equals empty array
  Increase PHPStan level to 8 with strict rules
  DX: ensure PhpUnitNamespacedFixer handles all classes

check_trailing_spaces.sh

@@ -2,22 +2,16 @@
 set -eu
 
 files_with_trailing_spaces=$(
-    find . \
-        -type f \
-        -not -path "./.git/*" \
-        -not -path "./dev-tools/bin/*" \
-        -not -path "./dev-tools/vendor/*" \
-        -not -path "./vendor/*" \
-        -not -path "./tests/Fixtures/*" \
-        -exec grep -EIHn "\\s$" {} \; \
+    git grep -EIn "\\s$" \
+        ':!tests/Fixtures/*' \
     | sort -fh
 )
 
 if [ "$files_with_trailing_spaces" ]
 then
     printf '\033[97;41mTrailing whitespaces detected:\033[0m\n'
     e=$(printf '\033')
-    echo "${files_with_trailing_spaces}" | sed -E "s/^\\.\\/([^:]+):([0-9]+):(.*[^\\t ])?([\\t ]+)$/${e}[0;31m - in ${e}[0;33m\\1${e}[0;31m at line ${e}[0;33m\\2\\n   ${e}[0;31m>${e}[0m \\3${e}[41;1m\\4${e}[0m/"
+    echo "${files_with_trailing_spaces}" | sed -E "s/^([^:]+):([0-9]+):(.*[^\\t ])?([\\t ]+)$/${e}[0;31m - in ${e}[0;33m\\1${e}[0;31m at line ${e}[0;33m\\2\\n   ${e}[0;31m>${e}[0m \\3${e}[41;1m\\4${e}[0m/"
 
     exit 3
 fi

dev-tools/composer.json

@@ -8,7 +8,8 @@
         "mi-schi/phpmd-extension": "^4.3",
         "phpmd/phpmd": "^2.6",
         "phpstan/phpstan": "0.12.18",
-        "phpstan/phpstan-phpunit": "^0.12"
+        "phpstan/phpstan-phpunit": "^0.12",
+        "phpstan/phpstan-strict-rules": "^0.12"
     },
     "conflict": {
         "hhvm": "*"