Fix dependency tree

Depend on ryo.rb, nanoc-gunzip.rb, and nanoc-webpack.rb via git.

Gemfile

@@ -1,19 +1,30 @@
 # frozen_string_literal: true
-
 source "https://rubygems.org"
+
+##
+# nanoc
 gem "nanoc", "~> 4.12"
 gem "nanoc-live", "~> 1.0"
-gem "nanoc-gunzip.rb", "~> 0.1"
+
-gem "nanoc-webpack.rb", "~> 0.1"
+##
-gem "rainpress", "~> 1.0"
+# Ruby web server
-gem "sass", "~> 3.7"
-gem "standard", "~> 1.16"
-gem "ryo.rb", "~> 0.3"
-gem "paint", "~> 2.3"
-gem "dotenv", "~> 2.8"
 gem "adsf", "~> 1.4"
 gem "puma", "~> 6.0"
 
+##
+# nanoc filters
+gem "nanoc-gunzip.rb", github: "0x1eef/nanoc-gunzip.rb", tag: "v0.1.2"
+gem "nanoc-webpack.rb", github: "0x1eef/nanoc-webpack.rb", tag: "v0.1.3"
+gem "rainpress", "~> 1.0"
+gem "sass", "~> 3.7"
+
+##
+# Other
+gem "ryo.rb", "~> 0.3", github: "0x1eef/ryo.rb", tag: "v0.3.0"
+gem "standard", "~> 1.16"
+gem "paint", "~> 2.3"
+gem "dotenv", "~> 2.8"
+
 ##
 # Listen gem
 require "rbconfig"