use conditional assignment

patch bump

lib/obsws/logger.rb

@@ -3,7 +3,7 @@ require "logger"
 module OBSWS
   module Logging
     def logger
-      @logger = Logger.new($stdout, level: ENV.fetch("OBSWS_LOG_LEVEL", "WARN"))
+      @logger ||= Logger.new($stdout, level: ENV.fetch("OBSWS_LOG_LEVEL", "WARN"))
       @logger.progname = instance_of?(::Module) ? name : self.class.name
       @logger
     end

lib/obsws/version.rb

@@ -11,7 +11,7 @@ module OBSWS
     end
 
     def patch
-      1
+      2
     end
 
     def to_a