Log Message:
www/ruby-crass: update to 1.0.6

Update ruby-crass to 1.0.6.

1.0.6 (2020-01-12)
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* Number values are now limited to a maximum of `Float::MAX` and a minimum of
  negative `Float::MAX`. (#11)

* Added project metadata to the gemspec. (#9 - @orien)

1.0.5 (2019-10-15)
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* Removed test files from the gem. [@t-richards - #8][8]

[8]:https://github.com/rgrove/crass/pull/8

1.0.4 (2018-04-08)
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* Fixed whitespace warnings. (#7 - @yahonda)