Top Posts: add filter to control number of displayed posts
Update portfolios.php

Added order and orderby options to the portfolio shortcode
Update portfolios.php

Sanitized orderby option
Update portfolios.php

Mistake in constructing the argument to orderby - argument is now a space separated string rather than an array.
Subscription form: do not display the logged in user's email

Can be overwritten with the jetpack_auto_fill_logged_in_user filter
Fixes #694
Subscriptions: Fix spacing

See https://github.com/jeherve/jetpack/commit/686ed49ceda02d4f49d66f1028a4523e9f882437#commitcomment-6888035
VideoPress: update module description wording

"host" makes it sound like the videos are hosted on your site,
while they're hosted on WordPress.com.
Minileven: update module description

The Mobile Theme is not activated on tablets, just phones.
Allow uppercase arguments to order option

Converts the order option to upper case before checking the value. Allows users to use upper, lower, or a combination in the shortcode and ensures that the argument is uppercased before passed to WP_Query.
Sharing: prevent duplicate @ in shared Tweets

This used to happen because Publicize's Twitter Connection Data saves the Twitter handle with an "@"
Slideshow: Add title and alt text to images

Fixes #1095
Site Logo: Properly pass the $show parameter to get_site_logo(), rather than setting it.
Site Logo: Correct evaluation of the Display Header Text checkbox in Customizer preview.
Site Icon: Remove trailing whitespace
Social Meta Tags: add Site Logo and Site Icon fallback

When no image is found in a post, use fallbacks to build an Open Graph Image tag and a Twitter Card
Site Icon: the icon should be 512px minimum
Twitter Cards: fallback if there is no existing image card
Fonts: change path to look for the svg in the right directory

Reported here:
https://wordpress.org/support/topic/error-500-568
Merge pull request #1268 from Automattic/get-site-logo-fix

Site Logo: Properly pass the $show parameter to get_site_logo(), rather ...
Merge pull request #1281 from jeherve/fix/path-jetpack-font

Fonts: change path to look for the svg in the right directory