Koichi ITO 0b36461d80 Suppress warning: BigDecimal.new is deprecated ...

## Summary

`BigDecimal.new` is deprecated since BigDecimal 1.3.3 for Ruby 2.5.

This PR suppresses the following warnings.

```console
% ruby -v
ruby 2.6.0dev (2018-09-06 trunk 64648) [x86_64-darwin17]
% RUBYOPT=-w bundle exec rake
(snip)
/Users/koic/src/github.com/Shopify/liquid/lib/liquid/utils.rb:49:
warning: BigDecimal.new is deprecated; use Kernel.BigDecimal method
instead.
/Users/koic/src/github.com/Shopify/liquid/lib/liquid/utils.rb:53:
warning: BigDecimal.new is deprecated; use Kernel.BigDecimal method
instead.
```

## Other Information

The following is a change of BigDecimal 1.3.3 for Ruby 2.5 related to this PR.

- 533737338d
- 16738ad0ac

2018-09-09 21:10:20 +09:00

..

liquid

Suppress warning: BigDecimal.new is deprecated

2018-09-09 21:10:20 +09:00

liquid.rb

Add whitespace control character and associated tests

2016-06-28 09:15:45 +10:00