UserModel: remove methods that are redundant with db.User UserModel().get_by_api_key is exactly equivalent to User.get_by_api_key. UserModel's get_by_username and get_by_email are not exactly identical to their db.User counterparts, due to a difference in the order of optional arguments. Fortunately, these optional arguments are never used.

[tox]
envlist = py{26,27}-{pytest,nose}

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    nose: nose
    pytest: pytest
commands =
    nose: nosetests {posargs}
    pytest: py.test {posargs}