diff --git a/dwc_agent.gemspec b/dwc_agent.gemspec
index a010409..244ec32 100644
--- a/dwc_agent.gemspec
+++ b/dwc_agent.gemspec
@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
   s.name        = 'dwc_agent'
   s.version     = DwcAgent::Version.version
   s.license     = 'MIT'
-  s.date        = '2024-11-07'
+  s.date        = '2024-11-08'
   s.summary     = "Parse Darwin Core agent terms such as recordedBy and identifiedBy"
   s.description = "Parses the typically messy content in Darwin Core terms that contain people names"
   s.authors     = ["David P. Shorthouse"]
diff --git a/lib/dwc_agent/cleaner.rb b/lib/dwc_agent/cleaner.rb
index 0c6ae6d..6f1df2d 100644
--- a/lib/dwc_agent/cleaner.rb
+++ b/lib/dwc_agent/cleaner.rb
@@ -2,17 +2,25 @@ module DwcAgent
 
   class Cleaner
 
+    @defaults = {
+      blacklist: BLACKLIST,
+      given_blacklist: GIVEN_BLACKLIST,
+      family_blacklist: FAMILY_BLACKLIST,
+      particles: PARTICLES
+    }
+
     class << self
+      attr_reader :defaults
+
       def instance
         Thread.current[:dwc_agent_cleaner] ||= new
       end
     end
 
-    def initialize
-      @blacklist = BLACKLIST
-      @given_blacklist = GIVEN_BLACKLIST
-      @family_blacklist = FAMILY_BLACKLIST
-      @particles = PARTICLES
+    attr_reader :options
+
+    def initialize(options = {})
+      @options = self.class.defaults.merge(options)
     end
 
     def default
@@ -35,7 +43,7 @@ def clean(parsed_namae)
       end
 
       if parsed_namae.given &&
-         @given_blacklist.any?{ |s| s.casecmp(parsed_namae.given) == 0 }
+         options[:given_blacklist].any?{ |s| s.casecmp(parsed_namae.given) == 0 }
         return
       end
 
@@ -55,7 +63,7 @@ def clean(parsed_namae)
         return default
       end
 
-      if parsed_namae.display_order =~ @blacklist
+      if parsed_namae.display_order =~ options[:blacklist]
         return default
       end
 
@@ -113,7 +121,7 @@ def clean(parsed_namae)
       end
 
       if parsed_namae.family &&
-         @family_blacklist.any?{ |s| s.casecmp(parsed_namae.family) == 0 }
+         options[:family_blacklist].any?{ |s| s.casecmp(parsed_namae.family) == 0 }
         return default
       end
 
@@ -140,7 +148,7 @@ def clean(parsed_namae)
       if !family.nil? &&
          given.nil? &&
          !particle.nil? &&
-         !@particles.include?(particle.downcase)
+         !options[:particles].include?(particle.downcase)
         given = particle.sub(/[a-z]\./, &:upcase).sub(/^(.)/) { $1.capitalize }
         particle = nil
       end
@@ -161,11 +169,11 @@ def clean(parsed_namae)
         return default
       end
 
-      if !family.nil? && @family_blacklist.any?{ |s| s.casecmp(family) == 0 }
+      if !family.nil? && options[:family_blacklist].any?{ |s| s.casecmp(family) == 0 }
         return default
       end
 
-      if !given.nil? && @given_blacklist.any?{ |s| s.casecmp(given) == 0 }
+      if !given.nil? && options[:given_blacklist].any?{ |s| s.casecmp(given) == 0 }
         return default
       end
 
diff --git a/lib/dwc_agent/parser.rb b/lib/dwc_agent/parser.rb
index 394c0a9..ca11dcb 100644
--- a/lib/dwc_agent/parser.rb
+++ b/lib/dwc_agent/parser.rb
@@ -2,27 +2,33 @@ module DwcAgent
 
   class Parser
 
+    @defaults = {
+      prefer_comma_as_separator: true,
+      separator: SPLIT_BY,
+      title: TITLE,
+      appellation: APPELLATION,
+      suffix: SUFFIX,
+      strip_out_regex: Regexp.new(STRIP_OUT.to_s),
+      tidy_remains_regex: Regexp.new(POST_STRIP_TIDY.to_s),
+      char_subs_regex: Regexp.new([CHAR_SUBS.keys.join].to_s),
+      phrase_subs_regex: Regexp.new(PHRASE_SUBS.keys.map{|a| Regexp.escape a }.join('|').to_s),
+      residual_terminators_regex: Regexp.new(SPLIT_BY.to_s + %r{\s*\z}.to_s),
+      separators: SEPARATORS.map{|k,v| [ Regexp.new(k), v] }
+    }
+
     class << self
+      attr_reader :defaults
+
       def instance
         Thread.current[:dwc_agent_parser] ||= new
       end
     end
 
-    def initialize
-      options = {
-        prefer_comma_as_separator: true,
-        separator: SPLIT_BY,
-        title: TITLE,
-        appellation: APPELLATION,
-        suffix: SUFFIX
-      }
-      @namae = Namae::Parser.new(options)
-      @strip_out_regex = Regexp.new STRIP_OUT.to_s
-      @tidy_remains_regex = Regexp.new POST_STRIP_TIDY.to_s
-      @char_subs_regex = Regexp.new [CHAR_SUBS.keys.join].to_s
-      @phrase_subs_regex = Regexp.new PHRASE_SUBS.keys.map{|a| Regexp.escape a }.join('|').to_s
-      @residual_terminators_regex = Regexp.new SPLIT_BY.to_s + %r{\s*\z}.to_s
-      @separators = SEPARATORS.map{|k,v| [ Regexp.new(k), v] }
+    attr_reader :options, :namae
+
+    def initialize(options = {})
+      @options = self.class.defaults.merge(options)
+      @namae = Namae::Parser.new(@options)
     end
 
     # Parses the passed-in string and returns a list of names.
@@ -31,14 +37,14 @@ def initialize
     # @return [Array] the list of parsed names
     def parse(name)
       return [] if name.nil? || name == ""
-      name.gsub!(@strip_out_regex, ' ')
-      name.gsub!(@tidy_remains_regex, '')
-      name.gsub!(Regexp.union(@char_subs_regex, @phrase_subs_regex), CHAR_SUBS.merge(PHRASE_SUBS))
-      @separators.each{|k| name.gsub!(k[0], k[1])}
-      name.gsub!(@residual_terminators_regex, '')
+      name.gsub!(options[:strip_out_regex], ' ')
+      name.gsub!(options[:tidy_remains_regex], '')
+      name.gsub!(Regexp.union(options[:char_subs_regex], options[:phrase_subs_regex]), CHAR_SUBS.merge(PHRASE_SUBS))
+      options[:separators].each{|k| name.gsub!(k[0], k[1])}
+      name.gsub!(options[:residual_terminators_regex], '')
       name.squeeze!(' ')
       name.strip!
-      @namae.parse(name)
+      namae.parse(name)
     end
 
   end
diff --git a/lib/dwc_agent/version.rb b/lib/dwc_agent/version.rb
index 28e33f7..d826d3b 100644
--- a/lib/dwc_agent/version.rb
+++ b/lib/dwc_agent/version.rb
@@ -3,8 +3,8 @@ module DwcAgent
   class Version
 
     MAJOR = 3
-    MINOR = 2
-    PATCH = 1
+    MINOR = 3
+    PATCH = 0
     BUILD = 0
 
     def self.version