pspm_dcm incorrectly assign first value of dcm.stats to be always NaN

[teddychao]

Summary

Users have reported that pspm_dcm incorrectly assign first value of dcm.stats to be always NaN in the latest develop branch at the moment. This is suspected caused by the incorrect calculation of proc_subsessions in pspm_dcm, but relevant processing in pspm_dcm_inv may be also relevant. This is a critical issue and should be resolved asap.

[dominikbach]

The underlying cause is that trials statistics are excluded when there is any NaN data between trial start and trial end (around line 565). This should be changed - users would normally expect that when the NaN data are below the subsession threshold then the trial statistics are reported. This is an improvement, rather than a bug.

[dominikbach]

Actually, the problem the user reported is down to an indexing issue - it also happens with no missing data; so it's a bug. changed milestone to 6.1 accordingly.

[dominikbach]

Has been fixed in 6.1