support instagram host "instagram.com"
Don't expand image URLs that don't really point to images
Make Command-{ and Command-} switch active channels.

This is the standard previous/next tab key-combination for many
applications like web browsers, terminal emulators, and other messaging
clients. It would be great if LimeChat also supported it.

This patch has been tested on OS X 10.8.3.
Use ActiveColor instead of SelActiveColor when app is inactive.

When app is inactive and the channel highlight is removed, the channel name is not visible if the background and text are the same color. (See http://i.imgur.com/eUKFLhR.png)
Merge pull request #159 from philwebster/master

Make channel name visible when app is inactive and active text/background are the same color
Merge pull request #158 from smerrill/add-curly-braces

Make Command-{ and Command-} switch active channels.
Merge pull request #143 from moshee/master

Don't expand image URLs that don't really point to images.
Merge pull request #134 from shunirr/features/new-instagram-hosts

Add instagram.com support to inline images
Use local time zone for CTCP time
Add cmd+opt+up/cmd+opt+down to go to previous/next channel
Add NSDate.dateFromISO8601String helper method

Adapted from soffes/sstoolkit:
https://github.com/soffes/sstoolkit/blob/master/SSToolkit/NSDate%2BSSToolkitAdditions.m

Added support for ignoring milliseconds.
Support ISO8601 server times

Add support for ISO8601 server times as defined by the server-time CAP
spec: http://ircv3.atheme.org/extensions/server-time-3.2

Attempt to maintain backwards compatibility with old server-time formats
supported in various ZNC releases (including @t and @time keys, and
ISO8601 and unix timestamp values).

Send both the old znc.in/server-time and znc.in/server-time-iso
capabilities since we now support both formats.
Merge pull request #169 from blt04/server-time-iso

Support ISO8601 server times
Work around for a crashing bug in WebKit for Mountain Lion and Lion
Released 2.36
Add more unicode space(0x1680).
Add more unicode combining block(U+FE20 - U+FE2F).
Add more unicode combining block again.
Merge pull request #176 from hanabokuro/add_more_unicode_space

Add more unicode space(0x1680).
Merge Unicode block changes.