Update mangahere adapter

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gem 'activerecord'
 gem 'hanami-cli', github: 'hanami/cli'
-gem 'mangdown', '~> 0.14.0'
+gem 'mangdown', '~> 0.15.0'
 gem 'pg'
 
 group :development do

Gemfile.lock

@@ -30,15 +30,15 @@ GEM
       concurrent-ruby (~> 1.0)
       transproc (~> 1.0)
     i18n (0.8.6)
-    mangdown (0.14.1)
+    mangdown (0.15.0)
       nokogiri (~> 1.6)
       ruby-filemagic
       rubyzip (~> 1.1)
       typhoeus (~> 0.7)
-    mini_portile2 (2.2.0)
+    mini_portile2 (2.3.0)
     minitest (5.10.3)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.8.1)
+      mini_portile2 (~> 2.3.0)
     parallel (1.12.0)
     parser (2.4.0.0)
       ast (~> 2.2)
@@ -71,7 +71,7 @@ PLATFORMS
 DEPENDENCIES
   activerecord
   hanami-cli!
-  mangdown (~> 0.14.0)
+  mangdown (~> 0.15.0)
   minitest
   pg
   rubocop

lib/mangdown/adapters/manga_here.rb

@@ -1,23 +1,34 @@
 class MangaHere < Mangdown::Adapter::Base
   site :manga_here
 
-  ROOT = 'http://www.mangahere.co/'
-  CDN = 'http://l.mhcdn.net/store/manga/'
+  ROOT = 'http://www.mangahere.co/'.freeze
+  CDNS = [
+    'http://l.mhcdn.net/store/manga/',
+    'https://mhcdn.secure.footprint.net/store/manga/'
+  ].freeze
 
   attr_reader :root
 
   def self.for?(uri_or_site)
     uri_or_site.to_s.start_with?(ROOT) ||
-      uri_or_site.start_with?(CDN) ||
+      cdn_uri?(uri_or_site) ||
       uri_or_site.to_s == 'manga_here'
   end
 
+  def self.cdn_uri?(uri)
+    CDNS.any? { |cdn| uri.to_s.start_with?(cdn) }
+  end
+
   def initialize(uri, doc, name)
     super
 
     @root = ROOT
   end
 
+  def hydra_opts
+    { max_concurrency: 1 }
+  end
+
   def is_manga_list?(uri = @uri)
     uri =~ /#{root}mangalist/
   end
@@ -34,7 +45,7 @@ def is_chapter?(uri = @uri)
 
   # Must return true/false if uri represents a page for adapter
   def is_page?(uri = @uri)
-    uri.start_with?(CDN)
+    self.class.cdn_uri?(uri)
   end
 
   # Return Array of Hash with keys: :uri, :name, :site