Drop support for 2.3.

ioquatix · ioquatix · commit 0c69ffa2b990 · 2020-03-22T00:45:39.000+13:00
diff --git a/.travis.yml b/.travis.yml
@@ -4,11 +4,10 @@ cache: bundler
 
 matrix:
   include:
-    - rvm: 2.3
     - rvm: 2.4
     - rvm: 2.5
     - rvm: 2.6
-    - rvm: 2.7    
+    - rvm: 2.7
     - rvm: 2.6
       env: COVERAGE=PartialSummary,Coveralls
     - rvm: truffleruby
diff --git a/lib/protocol/http2/extensions/sum.rb b/lib/protocol/http2/extensions/sum.rb
diff --git a/lib/protocol/http2/extensions/unpack.rb b/lib/protocol/http2/extensions/unpack.rb
diff --git a/lib/protocol/http2/flow_controlled.rb b/lib/protocol/http2/flow_controlled.rb
@@ -19,7 +19,6 @@
 # THE SOFTWARE.
 
 require_relative 'window_update_frame'
-require_relative 'extensions/sum'
 
 module Protocol
 	module HTTP2
diff --git a/lib/protocol/http2/frame.rb b/lib/protocol/http2/frame.rb
@@ -21,9 +21,6 @@
 
 require_relative 'error'
 
-# This only exists to support Ruby 2.3:
-require_relative 'extensions/unpack'
-
 module Protocol
 	module HTTP2
 		END_STREAM = 0x1
diff --git a/protocol-http2.gemspec b/protocol-http2.gemspec
@@ -18,6 +18,8 @@ Gem::Specification.new do |spec|
 	spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
 	spec.require_paths = ["lib"]
 	
+	spec.required_ruby_version = '~> 2.4'
+	
 	spec.add_dependency "protocol-hpack", "~> 1.4"
 	spec.add_dependency "protocol-http", "~> 0.15"
 	
