Rafael Oliveira

Results 3 issues of Rafael Oliveira

Ci is not working right now because Gemfile defines ruby version `2.6.0`and appveyor is using `2.3.3` https://ci.appveyor.com/project/yegor256/0pdd/builds/24825203

As confirmed by this test: https://github.com/zold-io/zold/blob/master/test/test_wallets.rb#L62-L69 Issue #72 is already fixed.