Bump podspec to 4.7.2, updated CHANGELOG

Author: drmohundro

CHANGELOG.md

@@ -1,3 +1,7 @@
+## v4.7.2 (September 18, 2018)
+
+* Bump `WATCHOS_DEPLOYMENT_TARGET` to `3.0` (via [#193](https://github.com/drmohundro/SWXMLHash/pull/193))
+
 ## v4.7.1 (August 4, 2018)
 
 * Bump `SWIFT_VERSION` to `4.0` (via [#191](https://github.com/drmohundro/SWXMLHash/pull/191))

SWXMLHash.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name        = 'SWXMLHash'
-  s.version     = '4.7.1'
+  s.version     = '4.7.2'
   s.summary     = 'Simple XML parsing in Swift'
   s.homepage    = 'https://github.com/drmohundro/SWXMLHash'
   s.license     = { type: 'MIT' }