Using = in the command breaks the command recognition

[AlexB52]

This is really specific problem that shouldn't cause a problem right now.

When calling retest 'rake test =<test>' the output is:

Setup identified: [RAKE]. Using command: 'bundle exec rake test TEST=<test>'
Launching Retest...
Ready to refactor! You can make file changes now

The command is not recognised and the default setting kicks in. Passing a = is what makes the command fail.

[AlexB52]

I've submitted a pull request to allow = characters with tty-option https://github.com/piotrmurach/tty-option/pull/13