Julien's most updated code has all valence derivatives with the sign changed, so md_val needs to flip the sign. Also, the reader does not write "_d1, _d2" in the derivatives anymore for the new data files, so md_val does not look for "_d1, _d2". You need to select by hand which correlators are your valence derivatives, looking at the log file e.g.

corr_obs_TSM now supports different statistics between sloppy and correction without neglecting the correlation. Extra flags idm_corr, idm_sl, nms have been added to allow this feature.
Documentation added

functions for TSM runs.
read_mesons_correction -> read correction runs (exact + sloppy solutions)
corr_obs_TSM -> create Corr with <O_sloppy> + <O_correction>

Study and preliminary tests  on correlated fits

plots modification in juobs_obs

fit_routine uses Optim
LsqFit deps removed.

md_reader sign problem fixed

read_rw included. read_rw reads ms1.dat and pbp.dat

read_ms now returns YData
comp_t0 computes t0 R!=1 + rwf

juobs_linalg added, juobs deps extended (LinearAlgebra)