Capitalize Raku and update copyright date

Author: lizmat

README.md

@@ -1,6 +1,6 @@
 Module
 ------
-Text::CSV - Handle CSV data in raku
+Text::CSV - Handle CSV data in Raku
 
 Description
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@@ -21,7 +21,7 @@ and produce CSV data.
 ```
 Copying
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-Copyright (c) 2015-2018 H.Merijn Brand.  All rights reserved.
+Copyright (c) 2015-2019 H.Merijn Brand.  All rights reserved.
 
 This program is free software; you can redistribute it and/or modify
 it under the same terms as Perl itself.