Integrationtests

[vkmelnik]

A feature to write integration tests and test game scripts is added.

Integration tests can be written using Telescope-like syntax. An example of adding integration tests can be found in test/test.script.

[vkmelnik]

Hello, @britzl! What do you think about the changes?

[britzl]

@vkmelnik my sincere apologies for not getting back to you! I started reviewing the changes when you submitted the PR and then for some reason got interrupted and forgot about them. I will try to finish the review this weekend. Sorry about the delay!

[zulman]

Hope to see @vkmelnik soon :)