The devs work as hard as real life dictates to get the mod updated each time Minecraft updates... They are also constantly building in additional content each patch too.
As you can imagine the code for this mod is very complex, and everything has to be checked and tweaked to work again every time Mojang change their code around.
The dev team has recently grown and I believe there are 5 of them now working on this mod, which is very much alive and pushing forward.
As far as your questions are concerned, i'm not a dev so can't speak for them, but from what I understand..
1) Will the mod continue to update?
A) Most certainly yes.. with the new devs on board recently, im sure it will continue for a long time to come.
2) Will there be Fishermen?
Like Fishing docks and little NPC boats that go around fishing, or NPCs that sit and fish on the dock?
A) No official announcement, but nor reason why they shouldn't feature in a future update.
3) Will Farming extend to animals?
Will Farmers at any point gather, and breed animals? Or interact with them in some way?
A) Again, no official announcement, but is a feature that has been asked for before and i'm sure it's on the dev's radar to implement as and when possible.
4) Will there be... WAR!?
I noticed the barracks had some additional commands like the movement thing which I dont know how to work even if it does work right now. Does this mean that there will be other NPC enemies and armies in the future?
A) I believe the guards coming soon are for anti hostile mob protection (similar to the current hunter but more effective) - I don't believe there are any plans to implement competing colonies or factions to this mod, it's not the original goal of the mod to provide this.
5) Demolition Team?
Would you ever consider updating the builder role to a construction team of 2-4 NPCs that can construct buildings and deconstruct or clear assigned areas marked with signs, or clicked with the measuring stick?
A) You can already use the builder for this role, buy using the builders scan function. See the various posts on it on these forums, the Wiki or my fan site
www.minecolonymod.net6) Aging NPC's
Will there be kids and elders? I noticed Schools are on the planned list.
A) Children have been talked about in the past and are I believe on the "to-do" list. however I think a lot of other features have priority at the moment..