Add AID.
Remove unused import
Interpolate env variables in Python, shell=False
Add testimony and semiannual reports.
Add NLRB.
First version.
Add NSF.
Add RRB.
Add NCUA.
Consistent spacing.
Add HEAD requests against report urls for --dry_run.
Fix report url getting.
Switch to using res.ok to allow for 301, 302, etc.
Merge pull request #125 from unitedstates/dry-run-head-requests

Add HEAD requests against report urls for --dry_run
make sure all shell=False commands use arrays of strings
Merge pull request #111 from unitedstates/no_shell_2

Take two, shell=False
[ssa] adding to safe.yml
Merge branch 'master' into aid
renaming aid->usaid, it's their usual abbreviation
added --quick option to speed up dry run when desired