new dialog added for calculation.
step foward to seperated calculation
moving particles to mainwindow as baseparticles
seperating the calculation
start reimplementing calculation with TDD
renamend and extended vector.
A new test added
moving Vector to own header.
Introducing foward euler.
new tests added.
exchanging parameters to vectors
+= operator overloaded
some refactoring
renaming
done a lot for foward euler but i have the suspision that euler wont work if x == 0 -> stagnation. On the other side x will never be 0 because distance between particles is at least EPSILON2
approximation xsquared
new test
tests added and passed
this calculation solution of foward euler may work good
excluding some operators into vector.cpp
calculation works fine, only consideration of mass is missing
mass will be considered now
adjust time to produce arround 60 frames per second