path in instance_url gets stripped out

[gsar]

If I set the instance_url to a value that includes a path, for example https://my-api-proxy.example.com/api, the query api calls seem to end up going to https://my-api-proxy.example.com/services/data/v30.0/query instead of the expected https://my-api-proxy.example.com/api/services/data/v30.0/query.

It would seem this is because restforce always uses a path starting with / when handing it off to Faraday. Omitting the leading / might fix the issue as described here: lostisland/faraday#823 (comment)

[gsar]

this could be referring to the same issue: #629