We do not provide old releases officially but if you are interested in one concrete version, you can ask us for it and we can try to upload it.
We still have 1.4.7 in our website, so, one option could be 0.8.7 -> 1.4.7 -> 2.3.1. We also have documentation for both versions:
By the way, I will bet to got to 2.3.1 directly without passing through 1.x.
I hope it helps.