update README

README.adoc

@@ -27,24 +27,13 @@ Or install it yourself as:
 
 == Usage
 
-=== Configuration
-
-Configuration is optional. The available option is `logger` which is a `Logger` instance. By default, the logger is `Logger.new($stderr)` with `Logger::WARN` level. To change the logger level, use `RelatonBib.configure` block.
+=== Create bibliographic item
 
 [source,ruby]
 ----
 require 'relaton_bib'
 => true
 
-RelatonBib.configure do |config|
-  config.logger.level = Logger::DEBUG
-end
-----
-
-=== Create bibliographic item
-
-[source,ruby]
-----
 hash = YAML.load_file "spec/examples/bib_item.yml"
 => {"id"=>"ISOTC211",
 "fetched"=>"2022-05-02",
@@ -304,6 +293,10 @@ item.to_bibxml
     </reference>"
 ----
 
+=== Logging
+
+RelatonBib uses the relaton-logger gem for logging. By default, it logs to STDOUT. To change the log levels and add other loggers, read the https://github.com/relaton/relaton-logger#usage[relaton-logger] documentation.
+
 == Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

lib/relaton_bib.rb

@@ -4,7 +4,6 @@
 require "htmlentities"
 require "relaton_bib/version"
 require "relaton_bib/deep_dup"
-require "relaton_bib/config"
 require "relaton_bib/util"
 require "relaton_bib/localized_string"
 require "relaton_bib/forename"

lib/relaton_bib/version.rb

@@ -1,3 +1,3 @@
 module RelatonBib
-  VERSION = "1.18.5".freeze
+  VERSION = "1.19.0".freeze
 end

relaton-bib.gemspec

@@ -28,5 +28,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency "htmlentities"
   spec.add_dependency "iso639"
   spec.add_dependency "nokogiri", "~> 1.16"
-  spec.add_dependency "relaton-logger", "~> 0.1.0"
+  spec.add_dependency "relaton-logger", "~> 0.2.0"
 end