chore: backward compatibility and hash hash attributes

lib/anyway/config.rb

@@ -44,7 +44,7 @@ def config_name(val = nil)
       #   my_config = Anyway::Config.for(:my_app)
       #   # will load data from config/my_app.yml, secrets.my_app, ENV["MY_APP_*"]
       def for(name)
-        new(name, false).load_from_sources
+        new(name: name, load: false).load_from_sources
       end
     end
 
@@ -56,11 +56,19 @@ def for(name)
     #
     #   my_config = Anyway::Config.new(:my_app, true, {overrides: {some: :value}})
     #
-    def initialize(config_name = nil, do_load = true, overrides: {})
-      @config_name = config_name || self.class.config_name
+    # rubocop:disable Metrics/LineLength,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity
+    def initialize(config_name = nil, do_load = true, name: nil, load: true, overrides: {})
+      unless config_name.nil? && do_load.nil?
+        warn "[Deprecated] Positional arguments for Anyway::Config#initialize will be removed in 1.2.0. Use keyword arguments instead: initialize(name:, load:, overrides:)"
+      end
+      name = config_name unless config_name.nil?
+      load = do_load unless do_load.nil?
+
+      @config_name = name || self.class.config_name
       raise ArgumentError, "Config name is missing" unless @config_name
-      load(overrides) if do_load
+      self.load(overrides) if load
     end
+    # rubocop:enable Metrics/LineLength,Metrics/CyclomaticComplexity,Metrics/PerceivedComplexity
 
     def reload(overrides = {})
       clear