Log Message:
www/ruby-mustermann: update to 1.1.1

Update ruby-mustermann to 1.1.1.

Mustermann 1.1.1 (2020-01-04)

* Make sure that requireing ruby2_keywords when needed. Fixes #102 @Annih

Mustermann 1.1.0 (2019-12-30)

* Proper handling of Mustermann::ExpandError. Fixes #88 @namusyaka

* Support Ruby 3 keyword arguments. @mame

  o At the same time, we dropped a support that accepts options
    followed by mappings on Mustermann::Mapper. Reference commit

* Improve documentation and development. @horaciob, @epistrephein,
  @jbampton, @jkowens, @junaruga