Update changelog for release.

CHANGELOG.md

 Ansible Changes By Release
 ==========================
 
-0.4 "Unchained" ------- in progress, ETA May 2012
+0.4 "Unchained" ------- May 23, 2012
 
-* custom facts provided by the setup module mean no dependency on Ruby, facter, or ohai
+Internals/Core
+* internal inventory API now more object oriented, parsers decoupled
+* async handling improvements
+* misc fixes for running ansible on OS X (overlord only)
 * sudo improvements, now works much more smoothly
-* OS X support in progress for ansible on the host and clients (modules still TBA)
+* sudo to a particular user with -U/--sudo-user, or using 'sudo_user: foo' in a playbook
+* --private-key CLI option to work with pem files
+
+Inventory
+* can use -i host1,host2,host3:port to specify hosts not in inventory (replaces --override-hosts)
+* ansible INI style format can do groups of groups [groupname:children] and group vars [groupname:vars]
+* groups and users module takes an optional system=yes|no on creation (default no)
 * list of hosts in playbooks can be expressed as a YAML list in addition to ; delimited
-* tweaks to SELinux implementation for file module
+
+Playbooks
+* variables can be replaced like ${foo.nested_hash_key.nested_subkey[array_index]}
+* unicode now ok in templates (assumes utf8)
+* able to pass host specifier or group name in to "hosts:" with --extra-vars
+* ansible-pull script and example playbook (extreme scaling, remediation)
+* inventory_hostname variable available that contains the value of the host as ansible knows it
+* variables in the 'all' section can be used to define other variables based on those values
+* 'group_names' is now a variable made available to templates
 * first_available_file feature, see selective_file_sources.yml in examples/playbooks for info
-* fixes for yum module corner cases on EL5
 * --extra-vars="a=2 b=3" etc, now available to inject parameters into playbooks from CLI
-* file module now correctly returns the mode in octal
+
+Incompatible Changes
+* jinja2 is only usable in templates, not playbooks, use $foo instead
+* --override-hosts removed, can use -i with comma notation (-i "ahost,bhost")
 * modules can no longer include stderr output (paramiko limitation from sudo)
-* 'group_names' is now a variable made available to templates
-* variables in the 'all' section can be used to define other variables based on those values
+
+Module Changes
+* tweaks to SELinux implementation for file module
+* fixes for yum module corner cases on EL5
+* file module now correctly returns the mode in octal
 * fix for symlink handling in the file module
-* groups and users module takes an optional system=yes|no on creation (default no)
-* async handling improvements
 * service takes an enable=yes|no which works with chkconfig or updates-rc.d as appropriate
-* inventory_hostname variable available that contains the value of the host as ansible knows it
 * service module works better on Ubuntu
 * git module now does resets and such to work more smoothly on updates
-* fix to internals of hacking/test-module development script
-* ansible-pull script and example playbook (extreme scaling, remediation)
-* service fixes to better detect status using return codes of the service script
-* ansible INI style format can do groups of groups [groupname:children] and group vars [groupname:vars]
-* sudo to a particular user with -U/--sudo-user, or using 'sudo_user: foo' in a playbook
-* internal inventory API now more object oriented, parsers decoupled
-* --override-hosts removed (see following change...)
-* able to pass host specifier or group name in to "hosts:" with --extra-vars
-* git module supports branch=
-* unicode now ok in templates (assumes utf8)
 * modules all now log to syslog
-* can use -i host1,host2,host3:port to specify hosts not in inventory (replaces --override-hosts)
-* fixes for variable parsing in only_if lines
-* variables can be replaced like ${foo.nested_hash_key.nested_subkey[array_index]}
-* jinja2 is only usable in templates
 * enabled=yes|no on a service can be used to toggle chkconfig & updates-rc.d states
+* git module supports branch=
+* service fixes to better detect status using return codes of the service script
+* custom facts provided by the setup module mean no dependency on Ruby, facter, or ohai
+* service now has a state=reloaded
+* raw module for bootstrapping and talking to routers w/o Python, etc
+
+Misc Bugfixes
+* fixes for variable parsing in only_if lines
+* misc fixes to key=value parsing
 * variables with mixed case now legal
+* fix to internals of hacking/test-module development script
+
 
 0.3 "Baluchitherium" -- April 23, 2012