I think it's time for an update.
I've fixed the bug with changing the year, this now works, you will not be able to enter Invalid years, you will get prompt that there is an error with the year and it'll suggest two valid years.
i.e -4000, -3950, -3900 are valid
-3999, -3920, -3907 are Invalid
If you enter -3999 it will suggest you change it to -4000 or -3950.
Things being worked on: ( Will be release in the next version. )
The ability to change your selected civ.
Uncovering the world when you move units about with the editor.
Possible be able to change the units you start with.
If you 'd like to suggest any thing you'd like in the next version or an update of any version then let me know.
Cheers.
James.