feat: adds support for bumping for composer versions (#262)

Author: TilmannBach

lib/lifecycles/bump.js

@@ -50,12 +50,14 @@ Bump.getUpdatedConfigs = function () {
 Bump.pkgFiles = [
   'package.json',
   'bower.json',
-  'manifest.json'
+  'manifest.json',
+  'composer.json'
 ]
 
 Bump.lockFiles = [
   'package-lock.json',
-  'npm-shrinkwrap.json'
+  'npm-shrinkwrap.json',
+  'composer.lock'
 ]
 
 function getReleaseType (prerelease, expectedReleaseType, currentVersion) {