Bump version and update chagelog

Author: fisuda

src/config.xml

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<widget xmlns="http://wirecloud.conwet.fi.upm.es/ns/macdescription/1" vendor="FISUDA" name="json-injector" version="0.1.2">
+<widget xmlns="http://wirecloud.conwet.fi.upm.es/ns/macdescription/1" vendor="FISUDA" name="json-injector" version="0.1.3">
 
     <details>
         <title>Json Injector</title>

src/doc/changelog.md

@@ -1,3 +1,9 @@
+## v0.1.2 (2019-11-18)
+
+- Add input endpoint
+- Fix save state
+
+
 ## v0.1.2 (2019-11-16)
 
 - Add save state feature