Correction to forward recursion.
Fixed forward algorithm for the case when there is no binomial sampling error. Fixed it for real this time. Seriously.
Merge branch 'master' of https://github.com/fintzij/augSIR

Conflicts:
	R/augSIR.R
	tests/trajsim.R

Signed-off-by: Jonathan Fintzi <fintzij@uw.edu>