The mod's author, Chocolatin, doesn't really modify the mod very often, and we've built up a lot of issues since the mod's privious update was half a year ago, however he's usually active during mid to late summer, and it's early summer now, so we can expect him to return fairly soon. We also have reason to believe that he's been paying some attention to the forum and wiki during his absence. Although there have not been any releases in a while, the mod pretty much skipped from being version 1.2.5 to 1.5.2, it's been gone a while before, and I have faith it will return again. So no, not dead. Honestly, the current version, as long as you:
A) Don't use the machine gun on multiplayer. (It's not even defaultly obtainable anyway)
B) Disable NEI while attempting to trade with npcs. And
C) disable the dungeon that spawns in the end.
Will run with no problems at all! It's a little bit of work, but honestly, it's not like much of any other mods are updated to 1.8 anyway, and this version's fairly playable now, so although I too would appreciate a new version, it's really fine the way that it is.
Aside from the bug with trade rendering with NEI I'm not aware of any mod incompatiblities, and without those two things above crashing seems to relaly be pretty much avoidable. We're still making dungeons of our own and all of that, so the mod's sorta still active even without Chocolatin around.