Upgrade ecto (#361)

We were affected by one backwards incompatible change which was picked
up by the tests: changeset.errors now always returns a tuple
{String.t, Keyword.t} in its values [1]. No further changes were
required because we don’t interact with the errors values directly.

[1] elixir-ecto/ecto#1341

mix.exs

@@ -53,7 +53,7 @@ defmodule Constable.Mixfile do
       {:cowboy, "~> 1.0"},
       {:dialyxir, "~> 0.3", only: [:dev]},
       {:earmark, "~> 0.1.17"},
-      {:ecto, "~> 2.0.0-rc"},
+      {:ecto, "~> 2.0"},
       {:envy, "~> 0.0.1"},
       {:ex_machina, "~> 1.0.0-beta.1", github: "thoughtbot/ex_machina"},
       {:exgravatar, "~> 0.2"},

mix.lock

@@ -1,16 +1,16 @@
 %{"bamboo": {:git, "https://github.com/thoughtbot/bamboo.git", "79749dcba616e42db71ce99ee517d2a399facce4", []},
   "certifi": {:hex, :certifi, "0.4.0", "a7966efb868b179023618d29a407548f70c52466bf1849b9e8ebd0e34b7ea11f", [:rebar3], []},
   "combine": {:hex, :combine, "0.7.0"},
-  "connection": {:hex, :connection, "1.0.2", "f4a06dd3ecae4141aa66f94ce92ea4c4b8753069472814932f1cadbc3078ab80", [:mix], []},
+  "connection": {:hex, :connection, "1.0.3", "3145f7416be3df248a4935f24e3221dc467c1e3a158d62015b35bd54da365786", [:mix], []},
   "cors_plug": {:hex, :cors_plug, "0.1.4", "bf4a69d5a0c5bad35e126dc31e0a61e85ded4ece0c7a0b0be2617965957b50e5", [:mix], [{:plug, "> 0.8.0", [hex: :plug, optional: false]}, {:cowboy, "~> 1.0.0", [hex: :cowboy, optional: false]}]},
   "cowboy": {:hex, :cowboy, "1.0.4", "a324a8df9f2316c833a470d918aaf73ae894278b8aa6226ce7a9bf699388f878", [:rebar, :make], [{:cowlib, "~> 1.0.0", [hex: :cowlib, optional: false]}, {:ranch, "~> 1.0", [hex: :ranch, optional: false]}]},
   "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], []},
-  "db_connection": {:hex, :db_connection, "0.2.5", "3e5e28019e0ec744345568d22a2f5206109bff0e2571f4d7819e0d14cf955f3e", [:mix], [{:sbroker, "~> 0.7", [hex: :sbroker, optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, optional: true]}, {:connection, "~> 1.0.2", [hex: :connection, optional: false]}]},
+  "db_connection": {:hex, :db_connection, "1.0.0-rc.3", "d9ceb670fe300271140af46d357b669983cd16bc0d01206d7d3222dde56cf038", [:mix], [{:sbroker, "~> 1.0.0-beta.3", [hex: :sbroker, optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, optional: true]}, {:connection, "~> 1.0.2", [hex: :connection, optional: false]}]},
   "decimal": {:hex, :decimal, "1.1.2", "79a769d4657b2d537b51ef3c02d29ab7141d2b486b516c109642d453ee08e00c", [:mix], []},
   "dialyxir": {:hex, :dialyxir, "0.3.3", "2f8bb8ab4e17acf4086cae847bd385c0f89296d3e3448dc304c26bfbe4b46cb4", [:mix], []},
   "dialyze": {:hex, :dialyze, "0.2.1", "9fb71767f96649020d769db7cbd7290059daff23707d6e851e206b1fdfa92f9d", [:mix], []},
   "earmark": {:hex, :earmark, "0.1.19", "ffec54f520a11b711532c23d8a52b75a74c09697062d10613fa2dbdf8a9db36e", [:mix], []},
-  "ecto": {:hex, :ecto, "2.0.0-rc.4", "97969259499b934a1163a7f211acac11e94f8048933842ab2b09fa2d5b203aa1", [:mix], [{:sbroker, "~> 0.7", [hex: :sbroker, optional: true]}, {:postgrex, "~> 0.11.1", [hex: :postgrex, optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, optional: false]}, {:poison, "~> 1.5 or ~> 2.0", [hex: :poison, optional: true]}, {:mariaex, "~> 0.7.1", [hex: :mariaex, optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, optional: false]}]},
+  "ecto": {:hex, :ecto, "2.0.1", "cf97a4d353e14af3d3cc3b4452cfbd18b3aeee1fb4075475efeccec3853444a9", [:mix], [{:poison, "~> 1.5 or ~> 2.0", [hex: :poison, optional: true]}, {:sbroker, "~> 1.0-beta", [hex: :sbroker, optional: true]}, {:mariaex, "~> 0.7.7", [hex: :mariaex, optional: true]}, {:postgrex, "~> 0.11.2", [hex: :postgrex, optional: true]}, {:db_connection, "~> 1.0-rc.2", [hex: :db_connection, optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, optional: false]}]},
   "envy": {:hex, :envy, "0.0.2", "278045cf7a7c7d46bd607e9cd6632b7d3fc71ddaa9c26bf364ec11af961b313b", [:mix], []},
   "ex_machina": {:git, "https://github.com/thoughtbot/ex_machina.git", "7fdb226caddaefc544300b91bbbece6d946cdb27", []},
   "exgravatar": {:hex, :exgravatar, "0.2.0", "6a28d05e04b0536fa18fd38492d313469738d1f86bfd342146b358961f3ac459", [:mix], []},
@@ -31,9 +31,9 @@
   "phoenix_html": {:hex, :phoenix_html, "2.5.1", "631053f9e345fecb5c87d9e0ccd807f7266d27e2ee4269817067af425fd81ba8", [:mix], [{:plug, "~> 0.13 or ~> 1.0", [hex: :plug, optional: false]}]},
   "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.0.5", "829218c4152ba1e9848e2bf8e161fcde6b4ec679a516259442561d21fde68d0b", [:mix], [{:phoenix, "~> 1.0 or ~> 1.2-rc", [hex: :phoenix, optional: false]}, {:fs, "~> 0.9.1", [hex: :fs, optional: false]}]},
   "plug": {:hex, :plug, "1.1.4", "2eee0e85ad420db96e075b3191d3764d6fff61422b101dc5b02e9cce99cacfc7", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, optional: true]}]},
-  "poison": {:hex, :poison, "2.1.0", "f583218ced822675e484648fa26c933d621373f01c6c76bd00005d7bd4b82e27", [:mix], []},
+  "poison": {:hex, :poison, "2.2.0", "4763b69a8a77bd77d26f477d196428b741261a761257ff1cf92753a0d4d24a63", [:mix], []},
   "poolboy": {:hex, :poolboy, "1.5.1", "6b46163901cfd0a1b43d692657ed9d7e599853b3b21b95ae5ae0a777cf9b6ca8", [:rebar], []},
-  "postgrex": {:hex, :postgrex, "0.11.1", "f48af70c0a58b9bfd1aaa456ec4273624554cfb837726b6a7f0701da4a94b2dd", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, optional: false]}, {:db_connection, "~> 0.2", [hex: :db_connection, optional: false]}, {:connection, "~> 1.0", [hex: :connection, optional: false]}]},
+  "postgrex": {:hex, :postgrex, "0.11.2", "139755c1359d3c5c6d6e8b1ea72556d39e2746f61c6ddfb442813c91f53487e8", [:mix], [{:connection, "~> 1.0", [hex: :connection, optional: false]}, {:db_connection, "~> 1.0-rc", [hex: :db_connection, optional: false]}, {:decimal, "~> 1.0", [hex: :decimal, optional: false]}]},
   "ranch": {:hex, :ranch, "1.2.1", "a6fb992c10f2187b46ffd17ce398ddf8a54f691b81768f9ef5f461ea7e28c762", [:make], []},
   "scrivener": {:git, "https://github.com/drewolson/scrivener", "edea64662564e9fbc9b5a8f50ed265c93d5dfa67", [branch: "v2"]},
   "scrivener_ecto": {:git, "https://github.com/drewolson/scrivener_ecto", "8b0b97c708f31cdf923e439a2759afe5f0c8bbb6", []},

test/models/user_test.exs

@@ -34,7 +34,7 @@ defmodule Constable.UserTest do
     })
 
     refute changeset.valid?
-    assert changeset.errors[:email] == "must be a member of thoughtbot"
+    assert changeset.errors[:email] == {"must be a member of thoughtbot", []}
   end
 
   test "create_changeset sets name from username only if the name is blank" do