More Bitmaps and Calendar Fixes

The bitmap class introduced in the last post is now part of the SuperBitmap. The SuperBitmap class has retained the same API, but it now is just a facade wrapped around an instance of the Bitmap class. The Bitmap does all of the hard work.

I’ve made a couple of amendments to the Calendar and Date classes, too. The Date class now has its equals and not-equals operators overloaded, whilst the Calendar now shows Monday as the first column (instead of Sunday). It also handles clicks on buttons correctly if that button represents the currently-selected day in a different month/year.