Speed up compilation of html pages in production (#401)

* speed up compilation of html pages in production

* who needs all of that latex

* add latex-fonts-recommended

* math package

* how far can we push this

* just trimming off some little excess

* never mind, good enough

.travis.yml

@@ -18,7 +18,9 @@ cache:
 addons:
   apt:
     packages:
-      - texlive-full
+      - texlive-latex-base
+      - texlive-math-extra
+      - texlive-xetex
       - lmodern
 
 branches:

Gemfile.lock

@@ -5,12 +5,12 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     adsf (1.4.3)
       rack (>= 1.0.0, < 3.0.0)
-    autoprefixer-rails (9.8.6.1)
+    autoprefixer-rails (9.8.6.3)
       execjs
     builder (3.2.4)
     coderay (1.1.3)
     colored (1.2)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.1.7)
     cri (2.15.10)
     ddmemoize (1.0.0)
       ddmetrics (~> 1.0)
@@ -121,7 +121,7 @@ GEM
     terminal-notifier-guard (1.7.0)
     thor (1.0.1)
     tomlrb (1.3.0)
-    tty-color (0.5.1)
+    tty-color (0.5.2)
     tty-command (0.9.0)
       pastel (~> 0.7.0)
     tty-platform (0.3.0)

lib/filters/htmlpress.rb

@@ -1,5 +1,14 @@
 require 'htmlcompressor'
+require 'rainpress'
+require 'uglifier'
+
+class UglifyProxy < Uglifier
+  alias_method :compress, :compile
+end
+
+JS_COMPRESSOR = UglifyProxy.new
+CSS_COMPRESSOR = Rainpress
 
 Nanoc::Filter.define(:html_press) do |content, options|
-  HtmlCompressor::Compressor.new(compress_javascript: true, compress_css: true, remove_quotes: true, simple_boolean_attributes: true).compress content
+  HtmlCompressor::Compressor.new(compress_javascript: true, javascript_compressor: JS_COMPRESSOR, compress_css: true, css_compressor: CSS_COMPRESSOR, remove_quotes: true, simple_boolean_attributes: true).compress content
 end