Log Message:
Update to 1.22

Upstream changes:
1.22	- 2016-02-23, H.Merijn Brand
    * Small doc updates regarding blank_is_undef
    * Precedence error in doc
    * Add new method header

1.21	- 2016-01-06, H.Merijn Brand
    * Add confusion option to rewrite example
    * Alias %_ to row in hashref mode for csv function attributes
      on_in and before_out
    * Examples now use defined-or and thus require perl-5.10 or up
    * Fix \r\n ending with allow_loose_escapes (reported by Bas Bloemsaat)
    * It's 2016
    * Clarify $csv->csv (...) documentation (RT#110941)

1.20	- 2015-10-09, H.Merijn Brand
    * Use "say" in synopsis
    * Remove needless special characters in doc section
    * Change doc =item attributes for new to =head for index
    * Add known_attributes function/method
    * Add contributor notes
    * Allow undef as value for aliased attributes