Replace Mustache.ex with bbmustache

Mustache.ex rendering is failing due to an issue with it:
schultyy/Mustache.ex#12

mix.exs

@@ -37,7 +37,7 @@ defmodule Base16Builder.Mixfile do
       {:git_cli, "~> 0.2"},
       {:slugger, "~> 0.2"},
       {:color_utils, "0.2.0"},
-      {:mustache, "~> 0.3.1"},
+      {:bbmustache, "~> 1.5"},
       {:exfmt, [github: "lpil/exfmt"]}
     ]
   end

mix.lock

@@ -1,7 +1,7 @@
-%{"color_utils": {:hex, :color_utils, "0.2.0", "bbcf48e74e1da14bfc7b513a44fe518b5a7062d29e1ed3fd7cf0704e2f422a2f", [], [], "hexpm"},
+%{"bbmustache": {:hex, :bbmustache, "1.5.0", "8cfde0602e90a4057e161bf5288ade854b4e511e2e8924966a8438730e958381", [:rebar3], [], "hexpm"},
+  "color_utils": {:hex, :color_utils, "0.2.0", "bbcf48e74e1da14bfc7b513a44fe518b5a7062d29e1ed3fd7cf0704e2f422a2f", [:mix], [], "hexpm"},
   "exfmt": {:git, "https://github.com/lpil/exfmt.git", "c4b6abe01b8579e07480c32784c12ecf26f3e746", []},
-  "git_cli": {:hex, :git_cli, "0.2.3", "052f0ecfc43d86fb4a750741540bdb00ac63354c6588024555be62c8ea1eff33", [:mix], [], "hexpm"},
-  "mustache": {:hex, :mustache, "0.3.1", "4c6ee79b13aae954035fe31b83c94480ddc7b536d09c44d4c65e61a9ead38d6b", [:mix], [], "hexpm"},
-  "slugger": {:hex, :slugger, "0.2.0", "7c609e6eee6dbb44e7b0db07982932356cab476f00fc8d73320cdc50d7efa18e", [], [], "hexpm"},
-  "yamerl": {:hex, :yamerl, "0.3.3", "df48fe3e6aeaca05ec6c4b35418aa7c77258d0d1c32d578a2e12a14751c10d42", [:rebar3], [], "hexpm"},
-  "yaml_elixir": {:hex, :yaml_elixir, "1.3.0", "5b945c235f0bc9d49c60927834576952c9e106afbc1dfa76ffcf615d7615e35f", [:mix], [{:yamerl, "~> 0.3.2", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm"}}
+  "git_cli": {:hex, :git_cli, "0.2.4", "43f58045f5d168fa2cff8d2e3822b8c43f294b4b832a419ed8cc01337f1c5b3d", [:mix], [], "hexpm"},
+  "slugger": {:hex, :slugger, "0.2.0", "7c609e6eee6dbb44e7b0db07982932356cab476f00fc8d73320cdc50d7efa18e", [:mix], [], "hexpm"},
+  "yamerl": {:hex, :yamerl, "0.5.0", "6ec55a5d830f6f0d65a4030f5c5db24b0e72b813dfbde32fea44b4951ed9417c", [:rebar3], [], "hexpm"},
+  "yaml_elixir": {:hex, :yaml_elixir, "1.3.1", "b84b6333343b0cba176c43c463e622f838825e7476e35334f719b83df4535bff", [:mix], [{:yamerl, "~> 0.5", [hex: :yamerl, repo: "hexpm", optional: false]}], "hexpm"}}