Remove back-end altering code that no longer works in WordPress 3.8
Change 'contact me' link from direct email to form on page
Only load Masonry JS library when it is needed, viz. on portfolio archive pages
Remove debug mode that probably should have been removed a long time ago on production code!
Z-index layering improvements to single blog pages, avoiding a weird OS X/iOS Safari bug that caused article to sometimes appear beneath the back link and image despite having a higher z-index value (http://css-tricks.com/forums/topic/safari-for-ios-z-index-ordering-bug-while-scrolling-a-page-with-a-fixed-element/)