added abstract class Calculatable that includes standard number operations, and added some Set operations
updated input traits
updated input (fixed build)
implemented more set functions, fixed comparison bugs, added modulo, rounding and abs for basicReal and fixed tests
Merge remote-tracking branch 'origin/develop-JK' into develop-MW
added font
Font + minor
Font
test fix, ComposedSpecs
updated Font, Ellipse, graphics
WIP Text rendering
deleted .orig file
added Constructor<> traits for constructor class objects, developed set Intersection resolving, and did overall code cleaning
minor
added more set code and simplified some other files
added a MultipleOfSet test
added gcd and lcm, renamed SpecialValues to Infinity, and refined tests
Merge branch 'develop-MW' into develop-JK
collection bar for KeysElement
WIP Font