Transformation fxns to standardize data

[sckott]

Following #38 see if can make one or more functions to standardize column names, and probably data classes, to facilitate combining data

[sckott]

e.g,.

Get data

ct <- coral_traits(...)
tb <- traitbank(...)

Standardize and combine

stand(ct, tb)
#> ... data.frame with combined data from all inputs, 
#>     with columns combined that can be, and others 
#>     tacked on the end