Welcome back the latest issue of Week in Core, covering changes [38160-38180]. Here are the highlights:

• 20 commits
• 17 contributors
• 69 tickets created
• 4 tickets reopened
• 38 tickets closed

Ticket numbers based on trac timeline for the period above. The following is a summary of commits, organized by component.

Code Changes

Build/Test Tools

• Add npm-shrinkwrap.json to 4.5. By shrinkwraping our dependencies, the same versions of everything will be installed no matter what rules the dependency package.json has specified. [38177] #37541

Bundled Themes

• Bump versions and update theme tags. [38171] #37426

Customize

• Prevent customize-preview-widgets JS errors in preview if a sidebar is registered with empty before_widget/after_widget params. [38166] #37478

Emoji

• Add support for the Rainbow and Pirate flag emoji. Twemoji recently added images for the Rainbow and Pirate flags, and the latest iOS 10 beta added support for the Rainbow flag. Never let it be said that WordPress is at anything less than the cutting edge of emoji research and development. Merge of [38179] to the 4.6 branch. [38180] #37543
• Add support for the Rainbow and Pirate flag emoji. Twemoji recently added images for the Rainbow and Pirate flags, and the latest iOS 10 beta added support for the Rainbow flag. Never let it be said that WordPress is at anything less than the cutting edge of emoji research and development. [38179] #37543

Filesystem API

• Output buffering for request_filesystem_credentials() should wrap the function directly. [38167] #37488

HTTP API

• Set $use_authentication property of Requests_Proxy_HTTP to true when proxy authentication is required. [38173] #37494
• All non-GET/HEAD requests should put the arguments in the form body. [38165] #37456
• Normalize cookies before passing them to Requests. [38164] #37437
• Bump version of Requests to 1.7. [38163] #33055

I18N

• After [38077], merge two duplicate strings in wp_insert_term() and wp_update_term(). [38162] #18218

Plugins

• Use install_plugins_upload action to print the upload form. [38172] #37495
• Move capability checks further up in wp_ajax_update_plugin() and wp_ajax_delete_plugin(). [38168] #37490

Script Loader

• Ignore deregistered dependencies in wp_dependencies_unique_hosts(). [38174] #37502
• Script Loader: Clarify documentation of wp_resource_hints hook. [38161] #37458

Upgrade/Install

• Trigger additional JS events in shiny updates. [38175] #37512

Misc

• Trunk is now 4.7-alpha. [38178]
• Branch 4.6 [38176]
• Post WordPress 4.6 RC 1 version bump. [38170]
• WordPress 4.6 RC 1. [38169]

Props

Thanks to @davidakennedy, @DavidAnderson, @dd32, @dimadin, @francescobagnoli, @helen, @jorbin, @Koster, @ocean90, @pento, @peterwilsoncc, @ramiy, @SergeyBiryukov, @swissspidy, @westonruter, and @Yorick for their contributions!

#4-6, #week-in-core