played around with Apache Math, no symbolic differentiation
played around with Deriva, no symolic representation of derivaties
played around with Deriva, no symolic representation of derivaties
using SymPy for differentiation
getting the derivative as string using sympy works
Merge remote-tracking branch 'origin/compiler' into compiler

Conflicts:
	src/main/scala/scalapplcodefest/compiler/WolfePlayground.scala
	src/main/scala/scalapplcodefest/compiler/WolfeTransformer.scala
fixed WolfeTransformer