BTW ... it is quite difficult to find triplex on hex.pm. It does not mention the magic term "multitenant" or "multitenancy" anywhere in the description, which is probably what many people search for (one such person already popped up in the comments on Reddit, in fact).
hex.pm mangles the markdown in the README.md description which doesn't help any either. Even then, as someone who did not come to Elixir from Ruby, the reference and link to Apartment didn't really help me find it, either.
You may wish to consider tweaking the descriptions on github and especially hex.pm to make it more discoverable?