The Client object on its own doesn't fully express everything about a
single client, and so when loading clients from a static configuration
it's not enough to just (de)serialize clients.

To that end, LoadableClient contains the full representation of a client
and associated entities.

Cross client work 

also, RevokeClient -> RevokeClient for consistency.

Trusted Peers are clients that are authorized to mint tokens
for another client.

Various client api tweaks

Replaced by ClientRepoFromClients, which makes more sense IMO. Also, it
was doing the wrong thing: it was ignoring the client_id and client_secret
passed into it as far as I can tell.

Use the test fixture setup stuff in testutil instead.

Use the test fixture setup stuff in testutil instead.

Also tests that it's being loaded properly (which is not the case in
NewClientManagerFromClients, which will be removed in subsequent commit)

*: Update Go versions used for Travis tests and test tip

Added TLS support to the example application

connector_ldap: Implement connection pooling for LDAP connections

Fixes #309

a little easier to read this way IMO.

Set and list connectors from admin API

closes #360

* Create releases.md

* (SQUASH) make note about keys

vendor: update go-oidc to latest

Adds client manager

examples: add sample for clients

adds a client manager to handle business logic, leaving the repo
for basic crud operations. Also adds client to the test script