More housekeeping

* Modified version_added strings in recent modules
* Added firewalld inclusion to the CHANGELOG

CHANGELOG.md

@@ -14,6 +14,7 @@ New modules:
 
 * cloud:ec2_eip -- manage AWS elastic IP's
 * cloud:rax_clb_nodes -- manage Rackspace cloud load balancers
+* system: firewalld -- manage the firewalld configuration
 
 Misc changes:
 

library/cloud/ec2_eip

@@ -5,6 +5,7 @@ module: ec2_eip
 short_decription: associate an EC2 elastic IP with an instance.
 description:
     - This module associates AWS EC2 elastic IP addresses with instances
+version_added: 1.4
 options:
   instance_id:
     description:

library/system/firewalld

@@ -24,7 +24,7 @@ module: firewalld
 short_description: Manage arbitrary ports/services with firewalld
 description:
   - This module allows for addition or deletion of services and ports either tcp or udp in either running or permanent firewalld rules
-version_added: "1.3"
+version_added: "1.4"
 options:
   service:
     description: