Note: No other changes and renamings have been done yet so the crate is currently not in a compilable state.
nightly-2019-01-26 The wee_alloc is having problems with later nightlies.
This is no longer needed due to the addition of storage::alloc::Initialize.
The same name is used in Substrate.
This is the first step in improving the allocation interfaces.
For now kept super ugly but it should work at least ...
Also add storage::HashMap::get_mut.
Stabilized in Rust 1.32
We should maybe even remove this sub crate in favor of the example crates