Byoc

Feature
* Add an environment variable config ([`3c89019`](https://github.com/kalekundert/appcli/commit/3c89019d316727aecff319d982e6c012eca1ce8f))

Feature
* Allow parameters to control config order ([`12b8656`](https://github.com/kalekundert/appcli/commit/12b86563ebed29644533fd7ee895ae955bb26e87))
* Add convenience methods to load/reload app objects ([`f07de2b`](https://github.com/kalekundert/appcli/commit/f07de2b10fa88679535cd737fb4ea335dafb0268))
* Improve error reporting for mako templates ([`853f8b9`](https://github.com/kalekundert/appcli/commit/853f8b95f6345d9074cca820d4ea246a43f3f008))

Feature
* Rename App metaclass ([`7f52a35`](https://github.com/kalekundert/appcli/commit/7f52a35ffe2b2d970c85b96a56dcc97fa759ceee))

Fix
* Only count first paragraph as part of brief ([`39d91d2`](https://github.com/kalekundert/appcli/commit/39d91d2ef052e929bc5a7487308dae65f28d8239))

Feature
* Add `on_load` and remove `param(set=...)` ([`49b4e14`](https://github.com/kalekundert/appcli/commit/49b4e1439bb41da8e4f2f2941c76d42b8f2a71e5))

Fix
* Don't compare to ignore unless necessary ([`bd70420`](https://github.com/kalekundert/appcli/commit/bd704204e7afe8c29b6cbdf028d8259a5f0f028a))

Feature
* Automatically dedent docopt usage text ([`25164d7`](https://github.com/kalekundert/appcli/commit/25164d7abf827fbcf25464aff6be397a53aa7fc0))

Fix
* Allow params to be set to non-hashable values ([`9571c04`](https://github.com/kalekundert/appcli/commit/9571c04853d8a0dc7dd149850c8def30071b0810))

Fix
* Debug error message ([`5eded00`](https://github.com/kalekundert/appcli/commit/5eded004abdba1b613fbce9f1f13e089a3ed5528))