dwrpnorm: Wrapped normal pdf
In benaug/move.HMM: Fit HMM and HSMM animal movement models

This function evaluates the wrapped normal pdf. This function is modified from the wrapped normal pdf in the CircStats package so that it can evaluate more than one value at a time

1	dwrpnorm(theta, mu, rho, acc = 1e-05, tol = acc)

`theta`	a vector of values where the pdf is to be evaluated
`mu`	a value for the location parameter in the interval [-pi,pi]
`rho`	a value for the concentration parameter in the interval [0,1]
`acc`	parameter defining the accuracy of the estimation of the density Terms are added to the infinite summation that defines the density function until successive estimates are within acc of each other.
`tol`	the same as acc