I've been using Julia since 2015 and like it a lot, primarily for two reasons:
the types + multiple dispatch paradigm makes more sense to me than object-oriented programming, more generally I like the syntax,
it's interpreted which helps to try out ideas quickly and yet code can be very fast.
These are notes I keep on how to do stuff with Julia.
Creating a package in Julia: how to create a package from scratch using
Creating a package in Julia pt. 2: how to synchronise your new package with GitHub, Travis etc.
A list of some of the packages I contribute(d) to. I may write notes on some of them in the future.
JuDoc.jl, an experimental static site generator (SSG) which I use for this website (actively maintained).
CovarianceEstimation.jl, a package for robust covariance estimation I contribute to (ongoing development).
PDSampler.jl, a package I wrote while at the Alan Turing Institute for piecewise deterministic Monte Carlo samplers and accompanying our paper on using PDMC on restricted domains (infrequently maintained).