Release 4.0.1

# Changelog

## [Unreleased](https://github.com/recurly/recurly-client-php/tree/HEAD)

[Full Changelog](4.0.0...HEAD)

**Merged pull requests:**

- Generated Latest Changes for v2021-02-25 [\#595](#595) ([recurly-integrations](https://github.com/recurly-integrations))
- Sync updates not ported from 3.x client [\#590](#590) ([douglasmiller](https://github.com/douglasmiller))
- Replace empty\(\) with is\_null\(\) [\#588](#588) ([joannasese](https://github.com/joannasese))
- Replace empty\(\) with is\_null\(\) [\#587](#587) ([joannasese](https://github.com/joannasese))

.bumpversion.cfg

@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 4.0.0
+current_version = 4.0.1
 parse = (?P<major>\d+)
 	\.(?P<minor>\d+)
 	\.(?P<patch>\d+)

composer.json

@@ -1,6 +1,6 @@
 {
     "name": "recurly/recurly-client",
-    "version": "4.0.0",
+    "version": "4.0.1",
     "type": "library",
     "description": "The PHP client library for the Recurly API",
     "keywords": ["recurly", "payments", "pay"],

lib/recurly/version.php

@@ -4,5 +4,5 @@
 
 class Version
 {
-    public const CURRENT = '4.0.0';
+    public const CURRENT = '4.0.1';
 }