Version up and pin deps

Was running afoul of Credo issue
rrrene/credo#463 with Elixir 1.8.1 locally.

Took it as an opportunity to pin versions and get on last-month
versions of stuff

mix.exs

@@ -31,9 +31,9 @@ defmodule Gmylm.Mixfile do
   #
   # Type "mix help deps" for more examples and options
   defp deps do
-    [{:credo, "~> 0.5", only: [:dev, :test]},
-     {:yaml_elixir, "~> 1.3.0"},
-     {:ex_doc, "~> 0.14", only: :dev, runtime: false}]
+    [{:yaml_elixir, "2.1.0"},
+     {:credo, "1.0.4", only: [:dev, :test]},
+     {:ex_doc, "0.20.0", only: :dev, runtime: false}]
   end
 
   # defp elixirc_paths(:test), do: ["lib", "test/test_helpers"]

mix.lock

@@ -1,6 +1,12 @@
-%{"bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], []},
-  "credo": {:hex, :credo, "0.6.1", "a941e2591bd2bd2055dc92b810c174650b40b8290459c89a835af9d59ac4a5f8", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, optional: false]}]},
-  "earmark": {:hex, :earmark, "1.1.1", "433136b7f2e99cde88b745b3a0cfc3fbc81fe58b918a09b40fce7f00db4d8187", [:mix], []},
-  "ex_doc": {:hex, :ex_doc, "0.15.0", "e73333785eef3488cf9144a6e847d3d647e67d02bd6fdac500687854dd5c599f", [:mix], [{:earmark, "~> 1.1", [hex: :earmark, optional: false]}]},
-  "yamerl": {:hex, :yamerl, "0.3.3", "df48fe3e6aeaca05ec6c4b35418aa7c77258d0d1c32d578a2e12a14751c10d42", [:rebar3], []},
-  "yaml_elixir": {:hex, :yaml_elixir, "1.3.0", "5b945c235f0bc9d49c60927834576952c9e106afbc1dfa76ffcf615d7615e35f", [:mix], [{:yamerl, "~> 0.3.2", [hex: :yamerl, optional: false]}]}}
+%{
+  "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], []},
+  "credo": {:hex, :credo, "1.0.4", "d2214d4cc88c07f54004ffd5a2a27408208841be5eca9f5a72ce9e8e835f7ede", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm"},
+  "earmark": {:hex, :earmark, "1.3.2", "b840562ea3d67795ffbb5bd88940b1bed0ed9fa32834915125ea7d02e35888a5", [:mix], [], "hexpm"},
+  "ex_doc": {:hex, :ex_doc, "0.20.0", "47ef7d09d990fa4a4373c96c4bdff846836f011e88dd7695d31f54ec035ff38e", [:mix], [{:earmark, "~> 1.3", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.10", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm"},
+  "jason": {:hex, :jason, "1.1.2", "b03dedea67a99223a2eaf9f1264ce37154564de899fd3d8b9a21b1a6fd64afe7", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
+  "makeup": {:hex, :makeup, "0.8.0", "9cf32aea71c7fe0a4b2e9246c2c4978f9070257e5c9ce6d4a28ec450a839b55f", [:mix], [{:nimble_parsec, "~> 0.5.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.13.0", "be7a477997dcac2e48a9d695ec730b2d22418292675c75aa2d34ba0909dcdeda", [:mix], [{:makeup, "~> 0.8", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm"},
+  "nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},
+  "yamerl": {:hex, :yamerl, "0.7.0", "e51dba652dce74c20a88294130b48051ebbbb0be7d76f22de064f0f3ccf0aaf5", [:rebar3], [], "hexpm"},
+  "yaml_elixir": {:hex, :yaml_elixir, "2.1.0", "79ec163e0f379dadf4b0e8b5162567dc1feb96c3cfa793105869e2c616ab4342", [:mix], [{:yamerl, "~> 0.7", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm"},
+}