Consistent data masking

[peterdutey]

• use .data$ for all dplyr functions other than select()
• use quotation marks in select()
• use tidyselect::all_of(c(...)) for select(-...)

[peterdutey]

Initial test conclusive on 600 lines of database.R with

• x86_64-pc-linux-gnu 4.2.1, dplyr 1.0.9, tidyselect 1.1.2
• x86_64-pc-linux-gnu 3.6.3, dplyr 1.0.10, tidyselect 1.2.0
• x86_64-pc-linux-gnu 3.6.3, dplyr 1.0.10, tidyselect 1.2.0
• x86_64-pc-linux-gnu r-devel, dplyr 1.0.10, tidyselect 1.2.0

38723c9