Add PHP 8.3 support, update dependencies

.gitignore

@@ -1,3 +1,4 @@
 /vendor/
 /.phpcs-cache
 /.phpunit.result.cache
+/.phpunit.cache/

.markdownlint.json

@@ -0,0 +1,9 @@
+{
+  "default": true,
+  "MD013": false,
+  "MD014": false,
+  "MD024": false,
+  "MD028": false,
+  "MD031": { "list_items": false },
+  "MD034": false
+}

README.md

@@ -4,15 +4,15 @@
 
 Utilities for generating PHP code.
 
-
 ## Normalizers
 
-The normalizers generate readable PHP labels (class names, namespaces, property names, etc) from valid UTF-8 strings, 
+The normalizers generate readable PHP labels (class names, namespaces, property names, etc) from valid UTF-8 strings,
 [transliterating] them to ASCII and spelling out any invalid characters.
 
-### Usage:
+### Usage
 
 The following code (forgive the Japanese - a certain translation tool tells me it means "Pet Store"):
+
 ```php
 <?php
 
@@ -24,11 +24,13 @@ echo $namespace;
 ```
 
 outputs:
-```
+
+```text
 Petto\Shoppu
 ```
 
 and:
+
 ```php
 <?php
 
@@ -40,47 +42,48 @@ echo $property;
 ```
 
 outputs:
-```
+
+```text
 twoDollarBill
 ```
 
 See the [tests] for more examples.
 
 ### Why?
 
-You must **never** run code generated from untrusted user input. But there are a few cases where you do want to 
+You must **never** run code generated from untrusted user input. But there are a few cases where you do want to
 _output_ code generated from (mostly) trusted input.
 
 In my case, I need to generate classes and properties from an OpenAPI specification. There are no hard-and-fast rules
-on the characters present, just a vague "it is RECOMMENDED to follow common programming naming conventions". Whatever 
-they are. 
+on the characters present, just a vague "it is RECOMMENDED to follow common programming naming conventions". Whatever
+they are.
 
 ### How?
 
-Each normalizer uses `ext-intl`'s [Transliterator] to turn the UTF-8 string into Latin-ASCII. Where a character has no 
-equivalent in ASCII (the "€" symbol is a good example), it uses the [Unicode name] of the character to spell it out (to 
-`Euro`, after some minor clean-up). For ASCII characters that are not valid in a PHP label, it provides its own spell 
+Each normalizer uses `ext-intl`'s [Transliterator] to turn the UTF-8 string into Latin-ASCII. Where a character has no
+equivalent in ASCII (the "€" symbol is a good example), it uses the [Unicode name] of the character to spell it out (to
+`Euro`, after some minor clean-up). For ASCII characters that are not valid in a PHP label, it provides its own spell
 outs. For instance, a backtick "&#96;" becomes `Backtick`.
 
-Initial digits are also spelt out: "123foo" becomes `OneTwoThreeFoo`. Finally reserved words are suffixed with a 
-user-supplied string so they don't mess things up. In the first usage example above, if we normalized "class" it would 
+Initial digits are also spelt out: "123foo" becomes `OneTwoThreeFoo`. Finally reserved words are suffixed with a
+user-supplied string so they don't mess things up. In the first usage example above, if we normalized "class" it would
 become `ClassController`.
 
-The results may not be pretty. If for some mad reason your input contains ` ͖`  - put your glasses on! - the label will 
-contain `CombiningRightArrowheadAndUpArrowheadBelow`. But it _is_ valid PHP, and stands a chance of being as unique as 
+The results may not be pretty. If for some mad reason your input contains `͖`  - put your glasses on! - the label will
+contain `CombiningRightArrowheadAndUpArrowheadBelow`. But it _is_ valid PHP, and stands a chance of being as unique as
 the original. Which brings me to...
 
-
 ## Unique labelers
 
-The normalization process reduces around a million Unicode code points down to just 162 ASCII characters. Then it 
-mangles the label further by stripping separators, reducing whitespace and turning it into camelCase, snake_case or 
+The normalization process reduces around a million Unicode code points down to just 162 ASCII characters. Then it
+mangles the label further by stripping separators, reducing whitespace and turning it into camelCase, snake_case or
 whatever your programming preference. It's gonna be lossy - nothing we can do about that.
 
 The unique labelers' job is to add back lost uniqueness, using a `UniqueStrategyInterface` to decorate any non-unique
 class names in the list it is given.
 
 To guarantee uniqueness within a set of class name labels, use the `UniqueClassLabeller`:
+
 ```php
 <?php
 
@@ -96,7 +99,8 @@ var_dump($unique);
 ```
 
 outputs:
-```
+
+```text
 array(3) {
   'Déjà vu' =>
   string(7) "DejaVu1"
@@ -107,10 +111,11 @@ array(3) {
 }
 ```
 
-There are labelers for each of the normalizers: `UniqueClassLabeler`, `UniqueConstantLabeler`, `UniquePropertyLabeler` 
-and `UniqueVariableLabeler`. Along with the `NumberSuffix` implementation of `UniqueStrategyInterface`, we provide a 
+There are labelers for each of the normalizers: `UniqueClassLabeler`, `UniqueConstantLabeler`, `UniquePropertyLabeler`
+and `UniqueVariableLabeler`. Along with the `NumberSuffix` implementation of `UniqueStrategyInterface`, we provide a
 `SpellOutOrdinalPrefix` strategy. Using that instead of `NumberSuffix` above would output:
-```
+
+```text
 array(3) {
   'Déjà vu' =>
   string(11) "FirstDejaVu"
@@ -123,8 +128,7 @@ array(3) {
 
 Kinda cute, but a bit verbose for my taste.
 
-
 [transliterating]: https://unicode-org.github.io/icu/userguide/transforms/general/#script-transliteration
 [tests]: ./test/AbstractNormalizerTest.php
 [Transliterator]: https://www.php.net/manual/en/class.transliterator.php
-[Unicode name]: https://unicode.org/charts/charindex.html
+[Unicode name]: https://unicode.org/charts/charindex.html

composer.json

@@ -22,13 +22,14 @@
         "sort-packages": true
     },
     "require": {
-        "php": "~8.1 || ~8.2",
+        "php": "~8.2.0 || ~8.3.0",
         "ext-intl": "*"
     },
     "require-dev": {
-        "laminas/laminas-coding-standard": "^2.4",
-        "phpunit/phpunit": "^9.5",
-        "vimeo/psalm": "^4.27"
+        "laminas/laminas-coding-standard": "^3.0",
+        "phpunit/phpunit": "^10.5.37",
+        "psalm/plugin-phpunit": "^0.19.0",
+        "vimeo/psalm": "^5.26"
     },
     "autoload": {
         "psr-4": {