Simplified and corrected missing block handling
Added inmem flag for in-memory accelsearch
Some initial ideas for making the memory version of accelsearch
Fixed a bug that would cause errors at end of observations
Added 2nd Keplerian orbital params
Added memory use check and malloc/free of ffdot plane
Fixed how subharminfos get created and freed.  Also fixed a printing bug of FFT lens.
inmem version compiles and runs, but doesn't give the correct answers
Merge branch 'float_internals' into memaccel
Fixed merge from github