Remove duplicates from suggestions

1. Remove duplicates from suggestions
2. Use Dumb terminal for tests

Fix cache file doesn't exist problem

Fix this issue

2.1

Catch interrupt exception if jfill was closed using Ctrl+C

jfill2.0

Now it's possible to specify value inside another word. For example

jfill curl {{url}}/users?limit1

It's helpful when you test REST API in local environment and in production

jfill-1.0

The first version