Drop safe_yaml dependency (via cyclops) in favour of stdlib.

.travis.yml

@@ -2,10 +2,11 @@ language:
   ruby
 
 rvm:
-  - '2.0'
   - '2.1'
   - '2.2'
   - '2.3'
+  - '2.4'
+  - '2.5'
   - ruby-head
   - jruby-9.1
   - jruby-head

Rakefile

@@ -36,21 +36,21 @@ The main functions of Lingo are:
       ].to_a,
 
       dependencies: {
-        'cyclops'       => '~> 0.2',
+        'cyclops'       => '~> 0.3',
         'nuggets'       => '~> 1.5',
         'rubyzip'       => '~> 1.2',
         'sinatra-bells' => '~> 0.4',
         'unicode'       => '~> 0.4'
       },
 
       development_dependencies: {
-        'diff-lcs'   => '~> 1.2',
-        'nokogiri'   => '~> 1.6',
+        'diff-lcs'   => '~> 1.3',
+        'nokogiri'   => '~> 1.8',
         'open4'      => '~> 1.3',
-        'pdf-reader' => '~> 1.4'
+        'pdf-reader' => '~> 2.1'
       },
 
-      required_ruby_version: '>= 2.0'
+      required_ruby_version: '>= 2.1'
     },
     test: {
       pattern: %w[test/ts_*.rb test/attendee/ts_*.rb]

lib/lingo/config.rb

@@ -6,7 +6,7 @@
 # Lingo -- A full-featured automatic indexing system                          #
 #                                                                             #
 # Copyright (C) 2005-2007 John Vorhauer                                       #
-# Copyright (C) 2007-2016 John Vorhauer, Jens Wille                           #
+# Copyright (C) 2007-2018 John Vorhauer, Jens Wille                           #
 #                                                                             #
 # Lingo is free software; you can redistribute it and/or modify it under the  #
 # terms of the GNU Affero General Public License as published by the Free     #
@@ -24,7 +24,7 @@
 ###############################################################################
 #++
 
-require 'safe_yaml/load'
+require 'psych'
 require_relative 'cli'
 
 class Lingo
@@ -129,7 +129,7 @@ def load_config(key, type = key.to_sym)
       instance_variable_set("@#{type}_file", file)
 
       File.open(file, encoding: ENCODING) { |f|
-        @opts.update(SafeYAML.load(f)) }
+        @opts.update(Psych.safe_load(f.read)) }
     rescue Psych::SyntaxError => err
       err.message << " (in #{file})"
       raise