OpenApoc Update Agents, Bugfixes and Donations

Agents (with movement using tube) are implemented, bugfixes and user-mentioned improvements are also in. As usual, get the latest version at: Thank you very much Patrick Sweetman for your generous unexpected donation, and thank you Blackwolf-Kuzoku, Paddywhacker, MeirionHughes and others for using GitHub Issues for reporting bugs. If you want to support me, it is much appreciated and I'll be very grateful! - PayPal: - Rus