* [abi] Create ink_abi sub crate

* [abi] Add initial types for abi generation

* [abi] Add EventParamSpec to include indexed event params

* [abi] Add documentation field to specs

* [abi] Add license and readme links and clean up authors

* [abi] Add missing license headers

* [abi] Fix some compile errors

* [abi] Make macros usable internally

* [abi] Create type_spec_of_tuple constructor macro

* [abi] Implement serialization for tuples

* [abi] Implement serialize for array types

* [abi] Remove module prefix of Vec<T>

* [abi] Apply rustfmt

* [abi] Improve minor formatting

* [abi] Add trait to allow external crate to specify serialize of TypeSpec<T>

* [abi] Make rustfmt happy

* [abi] Handle missing Vec in no_std environment

We really need a further abstraction to handle memory types.
Right now they life in ink_core but we shouldn't depend on ink_core from within ink_abi.
So we want to extract the memory sub module out of ink_core into its own crate that we can from then on depend on.

* [abi] Use same array pre-impls as metadata prototype impl

* [abi] Depend on cennznet/type-metadata + adjustments

* [abi] add missing license headers

* [abi] fixes for renamings in type-metadata crate

* [abi] add IntoCompact impls for layout types

* [abi] properly forward std feature

* [abi] implement Serialize for Key

* [abi] apply rustfmt and add some layout constructors

This also removes the dependency from ink_abi to ink_core and adds derive feature to type-metadata dependency.

* [core] implement ink_abi traits for ink_core abstractions

* adjust ink_abi Cargo.toml to using std feature by default

# Conflicts:
#	abi/Cargo.toml

* [core] Integrate ink_abi no_std compat into ink_core

* [lang] initial skeleton of codegen for ink_abi

* Enhance Flush (#136)

* [core] Enhance Flush trait to make it work with SyncCell and SyncChunk

* apply rustfmt

* [core] implement ink_abi traits for ink_core abstractions

* [core] Integrate ink_abi no_std compat into ink_core

* [core] Apply cargo fmt

* [cli] initial adjustments for ink_abi to ink! template

* [abi] clean-up of Cargo.toml

* [abi] remove invalid lib docs

* [utils] Update utilities docs

* [abi] improve JSON encoding of layout structs

* [abi] improve JSON encoding and add builder pattern constructors

* [abi] Add InkProject meta type

* [abi] temporarily depend on improve-json-output type-metadata branch

* [core] adjust type-metadata temporary branch to use the same as ink_abi

* [ci] add travis CI nightly-2019-08-01 channel (experimental)

* [abi] add MessageSpecBuilder::{args, docs} methods

* [core] implement Metadata for AccountId and Hash of DefaultSrmlTypes

* [abi] change type of selector from u64 to u32

* [lang] add some helper routines

* [lang] add code generation for new ABI format

* [abi,core] use master branch for type-metadata again

* [lang] implement initial code gen for ABI generation

* [examples] adjust Flipper contract example to ink_abi generation

* [lang] remove old generate-abi-description feature and associated code

* [examples] remove traces of removed generate-api-description feature

* [core] make cells_origin and chunks_origin only visible for test-env

* [cli] adjust template for ink-abi update

* [abi] implement ink_abi_derive for HasLayout derive macro

* [lang] make use of new ink_abi_derive functionality

* [examples] adjust Flipper for new ink_abi derive crate feature

This is needed because we disable default features.

* [abi] remove some commented-out code

* [chores] update README and include ink_abi docs

* [abi] apply rustfmt

* [lang] apply rustfmt

* [abi] apply rustfmt to non derive crate

* [core] apply rustfmt

* [lang] trim doc strings coming from syn::Attribute

* [examples] rename .tools directory to .ink

* [examples] fix bug with no_std and "std" crate feature

* [lang] fix bug in abi generation for events

* [examples] adjust events example to new ink_abi

* [lang] fix some more edge cases with doc string trimming

* [lang] fix a bug that path matching for function arguments was off

* [examples] adjust Incrementer to new ink_abi

* [cli] rename .tools to .ink in template

* [cli] update template Cargo.toml

* [examples] temporarily fix type-metadata hick-up

* [examples] make ink_abi optional

* [examples] adjust Erc20 token example to new ink_abi

* [cli] fix template no_std support

* [*] use master branch of type-metadata crate again

* [examples] replace parity-codec/std with scale/std

* [core] derive Metadata for some util types

This unfortunately was lost upon the latest rebase.

* [ci] update from nightly-2019-08-01/2019-07-19 to just nightly-2019-08-09

* [abi] remove commented-out code

* [abi] add some docs to specs items

* Update abi/src/specs.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update abi/src/specs.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update core/src/storage/collections/stash/impls.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* Update core/src/storage/collections/stash/impls.rs

Co-Authored-By: Andrew Jones <ascjones@gmail.com>

* [examples] remove some more commented-out code

* [lang] remove outdated docs

* [lang] extract fn docs impl into helper method

* [lang] fix compile-error in `filter_doc_attributes`

* [core] use derive feature from ink_abi

* [examples] adjust shared_vec example for ink_abi

* [lang] trim doc comments raw string escape sequence

* [lang] adjust noop test for ink_abi

* [lang] adjust flipper test for ink_abi

* [lang] improve raw-string char sequence fix

* [lang] adjust incrementer test for ink_abi

* [lang] adjust events test for ink_abi

* [lang] fix whitespace (tabs) issues in lang tests

* [ci] add examples to CI

* [ci] remove +nightly attribute for examples

* [abi] remove instances of std usage

* [core] remove instances of std usage

* [examples] erc20: remove std usage in no_std environment

* [core] factor out ink_abi and type-metadata and guard their use with ink-generate-abi feature

* [examples] adjust examples to newest refactoring in ink_core

* [cli] adjust template to ink_core refactorings

* [scripts] add new script to quickly check all example smart contracts

* [ci] make use of new check-examples script

* [*] apply rustfmt

* [scripts] adjust check-examples to no longer set test-env

* [scripts] Add check-workspace script

* [examples] make test-env a default feature

* [cli] make test-env a default feature for the template

* [ci] update CI to use the new check-workspace script

* [*] parity-codec -> parity-scale-codec

* [core, model] Decode impls Option -> Result

* [core] typed_cell load expect successful Decode

* [core] Option to Result, remove redundant combinator

* [model] Option to Result

* [*] abbreviate parity-scale-codec

* [core] fix dummy Call Decode impl

* make std crate feature default for all ink crates

* adjust travis CI for builds without std feature enabled

* remove incorrect usages of ink_abi

* apply rustfmt

* remove invalid type-metadata dependencies for ink_core

* [lang] fix Cargo.toml indentations

* adjust Erc20 token examples for new std crate feature

* adjust template and lang example std feature and propagation

* [core] Factor nightly alloc parts out of core into new alloc ink crate

* Further cleanup after factoring out ink_alloc crate

* [alloc] Use symlinks instead of copies

* [ink] Update rust-toolchain from 2019-04-20 to 2019-05-21

* [core,lang] Update & fix Cargo information

* [chores] Update rustfmt version to the current toolchain

* [core] Clean up, fix some warnings

* [core] Remove unneeded dependency

* [core] Ignore return value of Key ops

Fixes a warning

* [core,model] Adjust warning level

* [lang] Minor rustfmt run

* [ink] Add topics to events

For now, ink! will simply leave topics slice empty.

* [core] Add ext_gas_left, ext_gas_price and ext_value_transferred bindings

* [core] Clean up some code by dedup

* [core] Further code clean up

* [core] Simplify SrmlEnv::load impl

Note: No other changes and renamings have been done yet so the crate is currently not in a compilable state.

This can be reverted back to the official parity-codec project once the new version with the changes has been released on crates.io.

Now it has the required features in a branch.

This is required because of some special impls for pDSL that while not being mandatory, they are still important enough to serve usability.

The problem is that env_logger is obviously not no_std compatible.
At first you would think that this is not a problem, since it is only a dev-dependency that is allowed to pull the std lib.
However, due to a Cargo "bug" all dev-dependencies and normal dependencies need to have shared feature flags.
So since env_logger depends on log and pdsl_core depends on log both need to share their feature set which is chosen to be just the one that pulls std - what a mess ...

We now need our own logging facilities that are no_std compatible.

The problem with std::collections::HashMap is that there is no core::collections::HashMap or similar replacement for our no_std environment.
Also hashbrown seems to have superior performance.

This will help writing tests with general setup and tear-down mechanics.
Used to initialize env_logger for every unit test.

Fixed now!

The new system uses similar patterns as .gitignore does.

This should make it work in a default test environment.

This enabled TestEnv and disabled DefaultEnv.
Use this for testing.
Before this commit the standard "test" feature was used, however, its problem is that the test feature is crate-local and cannot be enabled or disabled by dependencies.