1.7.0

Change history:

• Implemented #57 - a realistic citizen behavior. Citizens create their own day schedules.
• Implemented #68 - oil and ore industries work 365/24/7, agriculture and forestry 7/7 with an extended work shift.
• Implemented #70 - the custom events can now be disabled in the options.
• Bugfix #62 - vanilla game events will be now displayed properly on the time bar.
• Performance optimizations.