Remove ruby 2.3 support and fix human_state to use display option

.travis.yml

@@ -12,7 +12,6 @@ before_install:
   - bundle _1.16.1_ install
 
 rvm:
-  - 2.3.0
   - 2.5.0
   - 2.6.5
   - 2.7.0
@@ -47,16 +46,6 @@ script:
 
 matrix:
   exclude:
-    - rvm: 2.3.0
-      gemfile: gemfiles/norails.gemfile
-    - rvm: 2.3.0
-      gemfile: gemfiles/rails_5.0.gemfile
-#    - rvm: 2.3.0
-#      gemfile: gemfiles/rails_5.0_nobrainer.gemfile
-    - rvm: 2.3.0
-      gemfile: gemfiles/rails_5.1.gemfile
-    - rvm: 2.3.0
-      gemfile: gemfiles/rails_5.2.gemfile
     - rvm: 2.7.0
       gemfile: gemfiles/rails_5.2.gemfile
     - rvm: 2.6.5

README.md

@@ -434,6 +434,25 @@ job.stage1_completed
 job.aasm.current_state # stage3
 ```
 
+### Display name for state
+
+You can define display name for state using :display option
+
+```ruby
+class Job
+  include AASM
+
+  aasm do
+    state :stage1, initial: true, display: 'First Stage'
+    state :stage2
+    state :stage3
+  end
+end
+
+job = Job.new
+job.aasm.human_state
+
+```
 
 ### Multiple state machines per class
 

lib/aasm/instance_base.rb

@@ -28,7 +28,7 @@ module AASM
     end
 
     def human_state
-      AASM::Localizer.new.human_state_name(@instance.class, state_object_for_name(current_state))
+      state_object_for_name(current_state).display_name
     end
 
     def states(options={}, *args)

spec/models/default_state.rb

@@ -2,7 +2,7 @@ class DefaultState
   attr_accessor :transient_store, :persisted_store
   include AASM
   aasm do
-    state :alpha, :initial => true
+    state :alpha, :initial => true, display: 'ALPHA'
     state :beta
     state :gamma
     event :release do

spec/unit/api_spec.rb

@@ -13,6 +13,10 @@ if defined?(ActiveRecord)
       expect(DefaultState.new.aasm.current_state).to eql :alpha
     end
 
+    it "uses display option" do
+      expect(DefaultState.new.aasm.human_state).to eql "ALPHA"
+    end
+
     it "uses the provided method" do
       expect(ProvidedState.new.aasm.current_state).to eql :beta
     end