Replaced the screenshot for modifying WinEdt's setup to use Bibulous.
Created a 'nested_templates' list as a Bibdata class attribute, in preparation for allowing nested templates.\n\nAlso moved some code in format_bibitem() into insert_specials(), the latter of which then expanded to add user-defined special fields. In 'test1' of the testing suite, I added a test to check that this works properly.