Update NAICS file to explicitly define every 6-digit code (#103)

* add correct naics bridge

* style naics bridge

* update data_dictionary entry

* update ref values

* update documentation

* update NEWS.md

Author: jdhoffa

NEWS.md

@@ -1,5 +1,7 @@
 # r2dii.data (development version)
 
+* `naics_classification` now includes only 6-digit codes (@jdhoffa #103).
+
 # r2dii.data 0.1.0
 
 * r2dii.data is now [maturing](https://www.tidyverse.org/lifecycle/#maturing).

data-raw/data_dictionary/naics_classification.csv

@@ -1,5 +1,5 @@
 dataset,column,typeof,definition
-naics_classification,code,double,NAICS code
-naics_classification,code_level,double,Level of granularity of NAICS code
+naics_classification,code,double,Six-digit NAICS code
+naics_classification,naics_title,character,Original NAICS sector title
 naics_classification,sector,character,Associated 2dii sector
 naics_classification,borderline,logical,Flag indicating if 2dii sector and classification code are a borderline match