Update README.md
Use opacity for playback messages, always

opacity has been used for two years without any complaints.
after -webkit-filter use was introduced, there was a constant stream of
complaints about scrolling lag. It is believed to be a result of the
filter being applied on a per-message basis rather than as a container
block.
Fix line mistakenly removed in previous commit
Fix typos
Merge pull request #487 from rauix/typo-fix

Fix typos
Use built in window declaration to check shift state

Fixes inability to drag images to the desktop using the shift key
Add conversion support for the emoji-cheat-sheet.com library

Support is disabled by default and is included as a separate checkbox
in the name of the performance
Updated user defaults assistant

Instead of writing to two objects depending on whether an object wants
to be written or read from the group container or sandbox container, we
instead ask +keyIsExcludedFromGroupContainer: for intent and go based
off that. It is slightly slower because it has to process the key, but
not enough for the human to notice.
Fix preferences defaults not being registered early enough

Preferences defaults were being registered after several -awakeFromNib
calls occurred which means defaults such as spelling were not being
enabled before they were observed.
Version bump (not final)
Use isOperatingSystemAtLeastVersion: when available
Manually hide deprecation view instead of relying on defaults
Update model list
Use OS X as operating system name

Previously the value was pulled from SystemVersion.plist which Apple
maintained as “Mac OS X” but we now define the name ourself for
consistency
Remove concept of dependencies and keep queue serial
Revert "Remove concept of dependencies and keep queue serial"

This reverts commit d7e0fb1d54e7acb194f02854bceeae1f9ae79531.
minor operation queue tweaks
Fix incorrect model definition
Use "mode of operation" in place of "algorithm"

Update phrasing used for encryption related configuration tasks as an
e-mail has suggested that the terminology used is misleading and does
not represent the true meaning.
Addition to previous commit