Version bump to 0.5.0.pre
Created Interim variables, domains, and units
Adds placeholder code to integrate Exam Cycle 2 data
Fixes code to obfuscate exam cycle 2 ID's
Removes data for subjects without an obf_pptid
Merged changed from 0.4.4 into 0.5.0 branch
Adds additional IDs to drop from the dataset
Strips PHI out of free text variables
Converts date values to be in a 'days from baseline' format
Adds code to export exam cycle 2 dataset
Adds a missing semicolon
Changes date variables to be `type: numeric`
Drops unneeded variables from the exam cycle 2 dataset
Corrects issues with merging in obfuscated IDs
Changes the variable used to calculate study date for the interim dataset
Limits SHHS2 dataset to only SHHS2 participants
Updates the interim follow-up dataset name
Adds additional domain options
Deletes JSON files for previously removed variables
Version bump to 0.5.0.beta1