Liasis now builds with the 10.7 SDK.
Added a credit window that is displayed upon clicking the menubar item About Liasis.

PLCreditWindowController controls this window's display and elements.
Removed the now-uneeded Credits.rtf file.
Added three button links to Liasis homepage, source code, and downloads in the credits window.
Replaced line wrapping text fields with non-line-wrapping equivalents to suppress a 10.8 width warning.
Added documentation for PLCreditWindowController class.
Several visual improvements to the credit window.
Minor alignment fixes to credit window.
Updated copyright date information on all file documentation.
Merge branch 'hotfix-0.1.2'

The merging branch updates the About Liasis information window and copyright information in file headers.