I was wondering if in milestones would be worth mentioning that Maidsafe refactored and started to port its whole codebase to Rust in March 2015.
That was quite a controversial and crazy move, and Maidsafe was the first in the crypto space (or any major project, apart from Mozilla afaik) to do that.
Rust wasn’t even in beta when David saw its potential and decided to start all over in this language, it was a very risky move.
Here is the discussion, you can see how David shares his discovery in the community, and how he ends getting more and more convinced this is the way to go.