changelog and bump to 0.17.3 for publish

CHANGELOG.txt

@@ -1,3 +1,15 @@
+CHANGES IN VERSION 0.17.3 (from 0.17.2)
+=======================================
+
+#### General
+- add new desired capabilities handling to conform to the Selenium 3 spec. Use
+  of old desired capabilities will now be deprecated. See [the spec
+  draft](https://code.google.com/p/selenium/source/browse/spec-draft.md?repo=mobile) for more information
+
+#### Android
+- fix process detection
+- make sure temp dir exists before writing zipaligned apk to it
+
 CHANGES IN VERSION 0.17.2 (from 0.17.1)
 =======================================
 

package.json

@@ -11,7 +11,7 @@
     "firefoxos",
     "testing"
   ],
-  "version": "0.17.2",
+  "version": "0.17.3",
   "author": "appium-discuss@googlegroups.com",
   "licenses": [
     {