rept/zoho_invoice — pull request #2 by tkawa (2014-11-20 09:59:49+00:00)
Title: Fix unnecessary substitution

```
gsub(/[`~!@#$%^&*()+=\\|\[{\]}'";:\/?><]/, ' ')
```
This gsub even applies to String so this causes unnecessary substitution,
such as an email 'foobar@example.com' -> 'foobar example.com'.