[Laplace] sum now around argument, instead of call to array
[latent plotting] some adjustments for nicer looking plots
[pickling] load added to gpy, allows for easy loading of pickled models
[init] parameter updates now check if in init
[sparse gp] prediction with posterior per dimension activated
[stochastics] updated some stuff on the stochastics
[var dtc missing] deleted code for missing data inference
[ObsAr] do not make a copy, if not needed