Some data item names differ only in the placement of the dot symbol

[vaitkus]

This development cycle introduced several new data names that may cause compatibility issues for older software. Such data names refer to different data items, but differ only in the placement of the dot symbol (see discussion in #197 (comment)). Currently noticed instances include:

• _pd_calib_xcoord_overall.id and _pd_calib_xcoord.overall_id.
• _pd_peak_overall.id and _pd_peak.overall_id.

If I find the time, I will make an automated check to detect any more of such instances. It would be best to address this before the release of the new dictionary version.

@jamesrhester is there a suitable GitHub label in this project to mark an issue as a release blocker?

[rowlesmr]

Just went through and these are the only two (in pd) that have that collision.

In this instance, what about changing to

• _pd_calib_xcoord_overall.id and _pd_calib_xcoord.xcoord_overall_id.
• _pd_peak_overall.id and _pd_peak.peak_overall_id.

The form taken by PD_AMORPHOUS, PD_BACKGROUND, and PD_REFLN where they link to a peak. is _pd*.peak_overall_id

[jamesrhester]

@vaitkus: I've added a "blocker" label. @rowlesmr, as all of these data names are relatively new (as far as I can tell) we should be OK changing them, your suggestions work for me.