Added CNAME file.
Renamed CSS directory to lowercase css.
Added Google Analytics code.
Added a robots.txt file.
Added a (basic) 404 page.
Optimised images using ImageOptim
Moved site over to Bootstrap 2.0 and made it fully responsive.

Everything looks pretty much the same as how it looked pre Bootstrap 2.0 apart from the fact that it doesn't look like crap on small screens now.
Changed `pre` overflow style to scroll rather than wrap.
Better Next/Previous post links.
Updated CNAME
Added a section to the site with recommended books/affiliate links.

Yes, this is an attempt to monetize this website a bit but all the books that I've recommended I have read, learnt from and enjoyed. All I'm trying to do is cover the cost of the domain and that's it.
Moved book cover images for recommended books to a sprite sheet.
Updated _config file for Jekyll 1.0
Spelling corrections to “An introduction to Cocoa Bindings”

Thanks to Pete Siemsen for pointing these out.
Updated config to support the latest version of Jekyll
Added a Gemfile
Updated baseurl for GitHub pages
Hopefully fixed a load of broken links
Fixed broken links in posts
Fixed broken images on the project page