* Remove `node-api` from `node-consensus` and `node-transaction-pool`
* Remove the `node-api` crate and its last usages
* Remove left over file
* Fixes compilation errors
* Switch to `As` trait
* Rename trait
* Whitespace
* Move module metadata from json string to custom metadata
* Revisit the metadata structures
1. Move the structures into the metadata crate.
2. Switch to using Cow/MaybeOwnedArray to support Encode/Decode
* Adapt to new metadata structures
* Convert event json metadata to new metadata structures
* Convert storage json metadata to new metadata structures
* Convert runtime metadata from json to new metadata structs
* Implements new metadata structures in client and runtime
* Fixes errors on `no_std`
* Fixes errors after rebasing master
* Do not use `Cow` anymore in metadata
Also replace `String` with our own type definition `StringBuf`.
This fixes compilation on `no_std`.
* Wrap `RuntimeMetadata` in `RuntimeMetadataVersioned` to support versioning
* Move metadata into `srml` and make core unaware of the implementation
* First effort
* API versioning
* Introduce validate_transaction
* Introduce the API plus fixes.
* Docs
* Typo
* Add longevity parameter to transaction validity info.
* Make `system` module renamable in `impl_outer_event!`
* Implement `construct_runtime!` macro
This macro generates code for calling all the common `impl_outer_*` macros.
* Add documentation
* Fixes wrong declaration of `contract`
* Update dependencies to work on `no_std`
* One more `Cargo.lock` update
* Address comments
* bugfix: balances::transfer for new_account
issue:#722
would_create flag should depend on dest, not origin.
change
```rust
let would_create = from_balance.is_zero();
```
to
```rust
let to_balance = Self::free_balance(&dest);
let would_create = to_balance.is_zero();
```
in the other hand, provide `fn new_test_ext2()` and let `transfer_fee=10`, `creation_fee=50` for test case
* Update lib.rs
* Update tests.rs
* Make `impl_outer_origin!` support generic `Origin`s (#732)
* Make `impl_outer_origin!` support generic `Origin`s
* Support empty outer origin
* Contracts: fix transfer function. (#733)
* Remove dependency on the parity repo (#734)
* Fix test
* Anothe fix
* Remove unneeded script
* Rename Substrate Demo -> Substrate
* Rename demo -> node
* Build wasm from last rename.
* Merge ed25519 into substrate-primitives
* Minor tweak
* Rename substrate -> core
* Move substrate-runtime-support to core/runtime/support
* Rename/move substrate-runtime-version
* Move codec up a level
* Rename substrate-codec -> parity-codec
* Move environmental up a level
* Move pwasm-* up to top, ready for removal
* Remove requirement of s-r-support from s-r-primitives
* Move core/runtime/primitives into core/runtime-primitives
* Remove s-r-support dep from s-r-version
* Remove dep of s-r-support from bft
* Remove dep of s-r-support from node/consensus
* Sever all other core deps from s-r-support
* Forgot the no_std directive
* Rename non-SRML modules to sr-* to avoid match clashes
* Move runtime/* to srml/*
* Rename substrate-runtime-* -> srml-*
* Move srml to top-level
Sergey Pepyakin