Will close #242. Nearly time to rip off the band-aid. For now just a draft PR to facilitate testing.

This is a breaking change for many things that rely on soilDB to query NASIS. It can be difficult to explain to new soilDB users why some columns are aliased and others follow the data model. It will be good to rely on the defined physical column names and standard associated metadata for better parity with internal NASIS queries, web reports, and the official data model in general.

Removes the following aliases in use in fetchNASIS()- and fetchVegdata()-related functions.

Replacing with NASIS physical column name as follows:

• site_id => usiteid
• pedon_id => upedonid or assocuserpedonid (as needed)
• describer => descname
• vegplot_id => vegplotid
• vegtransect_id => vegtransectid or vegtransectiid (as needed)
• x_std => longstddecimaldegrees
• y_std => latstddecimaldegrees
• elev_field => elev
• slope_field => slope
• aspect_field => aspect
• es_classifier => siteecositehistory.classifier (distinguished from classifier which is petaxhistory.classifier)
• sand => sandtotest
• silt => silttotest
• clay => claytotest
• genhz => dspcomplayerid

Aliases are still used for the foreign key columns that end in "ref" as many soilDB queries target multiple related tables, so it doesn't always make sense to include "ref" and users benefit from the shorter name e.g. peiid rather than peiidref

Affected code, projects, teaching materials:

• STATS I and II book content ()
• STATS I and II homework, exercises, demos (start with our "own" content, then move out from there)
• soilReports (how about we take care of those reports we maintain)
• NCSS tech tutorials (Dylan volunteers to do this)
• misc. scripts on local machines
• shiny apps ?

People to include in an email announcement:

• Sharon Perone
• Kevin Godsey
• John Hammerly
• Chad Ferguson
• Alex Stum
• Joe Brennan
• Nate Roe
• Shawn Salley
• Jon Maynard
• Emily Piche
• Amanda Pennino