Add support for carrierwave 1.3 and update travis build matrix

Author: rubydev

.gitignore

@@ -8,3 +8,4 @@ spec/public
 Gemfile.lock
 gemfiles/*.lock
 log/*
+.idea

.travis.yml

@@ -8,16 +8,18 @@ language: ruby
 cache: bundler
 rvm:
   - 2.2.9
-  - 2.3.7
-  - 2.4.4
-  - 2.5.1
+  - 2.3.8
+  - 2.4.5
+  - 2.5.3
+  - 2.6.0
 
 gemfile:
   - Gemfile
   - gemfiles/carrierwave-0.10.gemfile
   - gemfiles/carrierwave-0.11.gemfile
   - gemfiles/carrierwave-1.1.gemfile
   - gemfiles/carrierwave-1.2.gemfile
+  - gemfiles/carrierwave-1.3.gemfile
   - gemfiles/mongoid-3.gemfile
   - gemfiles/mongoid-4.gemfile
   - gemfiles/mongoid-5.gemfile

carrierwave-mongoid.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.add_dependency "carrierwave", [">= 0.8", "< 1.3"]
+  s.add_dependency "carrierwave", [">= 0.8", "< 1.4"]
   s.add_dependency "mongoid", [">= 3.0", "< 8.0"]
   s.add_dependency "mongoid-grid_fs", [">= 1.3", "< 3.0"]
   s.add_dependency "mime-types", "< 3" if RUBY_VERSION < "2.0" # mime-types 3+ doesn't support ruby 1.9

gemfiles/carrierwave-1.3.gemfile

@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem "carrierwave", "~> 1.3.0"
+
+gemspec path: "../"

gemfiles/mongoid-6.gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
 gem "mongoid", "~> 6.0"
-gem "carrierwave", "~> 1.2"
+gem "carrierwave", "~> 1.3"
 
 gemspec path: "../"

gemfiles/mongoid-7.gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
 gem "mongoid", "~> 7.0"
-gem "carrierwave", "~> 1.2"
+gem "carrierwave", "~> 1.3"
 
 gemspec path: "../"