Added name property to surface3d.function.Function; added surface3d.function.ExponentialExpression
Finished implementing surface3d.function.ConstantExpression and surface3d.function.VariableExpression
Implement surface3d.function.visitor.EvaluationVisitor
Basic GUI design
Create NetBeans project, remove tab characters
Create library project for class files which do not depend on Swing and can be reused in other versions
Create Android library project in common subdirectory
Create Android project in android subdirectory
Add WTFPL licenses to Android project source and resource files
Add OpenGL setup code
Add README