♻️ Allow Config[version] to work up to v1.0

This also causes Config[0.7r] through Config[1.0r] to be aliases (rather
than clones) of each other.

Author: nevans

lib/net/imap/config.rb

@@ -512,12 +512,6 @@ def defaults_hash
         parser_max_deprecated_uidplus_data_size: 0,
       }
 
-      version_defaults[0.7r] = {
-      }
-
-      version_defaults[0.8r] = {
-      }
-
       AttrVersionDefaults.compile_version_defaults!
 
       if ($VERBOSE || $DEBUG) && self[:current].to_h != self[:default].to_h

lib/net/imap/config/attr_version_defaults.rb

@@ -19,9 +19,9 @@ module AttrVersionDefaults
         NEXT_VERSION    = CURRENT_VERSION + 0.1r
 
         # The config version used for <tt>Config[:future]</tt>.
-        FUTURE_VERSION  = CURRENT_VERSION + 0.2r
+        FUTURE_VERSION  = 1.0r
 
-        VERSIONS = ((0.0r..0.8r) % 0.1r).to_a.freeze
+        VERSIONS = ((0.0r..FUTURE_VERSION) % 0.1r).to_a.freeze
 
         # See Config.version_defaults.
         singleton_class.attr_accessor :version_defaults

test/net/imap/test_config.rb

@@ -7,7 +7,7 @@ class ConfigTest < Net::IMAP::TestCase
   Config = Net::IMAP::Config
   THIS_VERSION   = Net::IMAP::VERSION.to_f
   NEXT_VERSION   = THIS_VERSION + 0.1
-  FUTURE_VERSION = THIS_VERSION + 0.2
+  FUTURE_VERSION = 1.0
 
   setup do
     Config.global.reset
@@ -184,8 +184,7 @@ class ConfigTest < Net::IMAP::TestCase
     assert_raise(RangeError) do Config[0.01] end
     assert_raise(RangeError) do Config[0.11] end
     assert_raise(RangeError) do Config[0.111] end
-    assert_raise(RangeError) do Config[0.9] end
-    assert_raise(RangeError) do Config[1] end
+    assert_raise(RangeError) do Config[1.1] end
   end
 
   test ".[] key errors" do