Add different capillar models into ViscoElasticPM.
Add links to equations, consider not only monodisperse particles.
Fix s parameter for Willet-formulation of capillar.
Add one more critical-calculation to capillar model.
Cleanings in viscoelastic capillar modell.
Move capillar calculation into another function not to overload VPM.
Modify Weigart`s model.
Update equations for Weigart`s capillar model.
Update capillar equations and names of schemas.
Move references to a references.bib.
Add comment on liquid bridges.
Fix some warnings (clang).