Update CHANGELOG

CHANGELOG.md

-## 0.8.0 (unreleased)
+## 0.7.5 (unreleased)
 
 FEATURES:
 
+  * **New command: `packer push`**: Push template and files to HashiCorp's
+      Atlas for building your templates automatically.
+  * **New post-processor: `atlas`**: Send artifact to HashiCorp's Atlas for
+      versioning and storing artifacts. These artifacts can then be queried
+      using the API, Terraform, etc.
+
 IMPROVEMENTS:
 
-* builder/googlecompute: Support for ubuntu-os-cloud project
-* builder/googlecompute: Support for OAuth2 to avoid client secrets file
-* builder/googlecompute: GCE image from persistant disk instead of tarball
-* builder/qemu: Checksum type "none" can be used
-* provisioner/chef: Generate a node name if none available
-* provisioner/chef: Added ssl_verify_mode configuration
+  * builder/googlecompute: Support for ubuntu-os-cloud project
+  * builder/googlecompute: Support for OAuth2 to avoid client secrets file
+  * builder/googlecompute: GCE image from persistant disk instead of tarball
+  * builder/qemu: Checksum type "none" can be used
+  * provisioner/chef: Generate a node name if none available
+  * provisioner/chef: Added ssl_verify_mode configuration
 
 BUG FIXES:
 
-* builder/parallels: Fixed attachment of ISO to cdrom device
-* builder/parallels: Fixed boot load ordering
-* builder/digitalocean: Fixed decoding of size
-* builder/digitalocean: Fixed missing content-type header in request
-* builder/digitalocean: Fixed use of private IP
-* builder/digitalocean: Fixed the artifact ID generation
-* builder/vsphere: Fixed credential escaping
-* builder/qemu: Fixed use of CDROM with disk_image
-* builder/aws: Fixed IP address for SSH in VPC
-* builder/aws: Fixed issue with multiple block devices
-* builder/vmware: Upload VMX to ESX5 after editing
-* communicator/docker: Fix handling of symlinks during upload
-* provisioner/chef: Fixed use of sudo in some cases
-* core: Fixed build name interpolation
-* postprocessor/vagrant: Fixed check for Vagrantfile template
+  * builder/parallels: Fixed attachment of ISO to cdrom device
+  * builder/parallels: Fixed boot load ordering
+  * builder/digitalocean: Fixed decoding of size
+  * builder/digitalocean: Fixed missing content-type header in request
+  * builder/digitalocean: Fixed use of private IP
+  * builder/digitalocean: Fixed the artifact ID generation
+  * builder/vsphere: Fixed credential escaping
+  * builder/qemu: Fixed use of CDROM with disk_image
+  * builder/aws: Fixed IP address for SSH in VPC
+  * builder/aws: Fixed issue with multiple block devices
+  * builder/vmware: Upload VMX to ESX5 after editing
+  * communicator/docker: Fix handling of symlinks during upload
+  * provisioner/chef: Fixed use of sudo in some cases
+  * core: Fixed build name interpolation
+  * postprocessor/vagrant: Fixed check for Vagrantfile template
 
 ## 0.7.2 (October 28, 2014)