Corebird 1.3.1 release.

• Fix muted and/or blocked tweets still showing up in timelines
• Fix accounts not getting saved when first created
• Fix retweets of the authenticating user not getting theiry correct seen status
• Fix profiles descriptions containing ampersand characters and links
• Fix profile banner fade-in transition
• Fix doubly-escaped ampersands in link tooltips
• Fix missing underlines in @screen_names in the profile popover