Files
notifications-api/app
Leo Hemsted 5b7118973e take advantage of click's type validation/coercion
(saves us having to write the stuff ourselves). Also adds a small
click plugin to do datetime parsing.

Sample output:

```
[leohemsted:~/dev/api]$ flask command create_provider_rates --help
Usage: flask command create_provider_rates [OPTIONS]

  Backfill rates for a given provider

Options:
  -p, --provider_name [mmg|firetext|ses]
                                  [required]
  -c, --cost FLOAT                Cost (pence) per message including decimals
                                  [required]
  -d, --valid_from DATE           [required]
  --help                          Show this message and exit.
[leohemsted:~/dev/api]$ flask command create_provider_rates -p ses -c 1.234 -d invalid
Usage: flask command create_provider_rates [OPTIONS]

Error: Invalid value for "-d" / "--valid_from": Could not parse datetime string "invalid" formatted as %Y-%m-%dT%H:%M:%S
```
2017-11-28 12:50:29 +00:00
..
2017-11-21 14:12:35 +00:00
2017-11-10 10:49:44 +00:00
2017-11-23 17:04:58 +00:00
2017-11-16 17:46:41 +00:00
2017-11-09 14:55:45 +00:00