I got `ERR-CONDUIT-CALL: Method 'phrequent.push' belongs to application 'Phrequent', which is not installed.`
When I trying to run `arc start T4` on one of my tasks:
```
$ arc tasks
T4 Title of T4 High Open
T1 Title of T1 High Open
$ arc start T4
Exception
ERR-CONDUIT-CALL: Method 'phrequent.push' belongs to application 'Phrequent', which is not installed.
(Run with `--trace` for a full exception trace.)
$ arc version
arcanist 3b6b523c2b236e3724a1e115f126cb6fd05fa128 (18 Feb 2017)
libphutil 5e14a5b17809be93c79554bc87bb5b6fe0f70bf4 (18 Feb 2017)
```
I tried searching the guide, but found `Phrequent` is a time tracking application working with Arcanist but found nothing about how to install it.
Anyone could help? Thanks a lot.
Best Regards