* Update to latest scale-info

* scale-info 0.2

* Merge branch 'master' into aj-update-scale-info

# Conflicts:
#	primitives/src/key.rs

* Fmt

* [abi] create new layout trait and structures

* [abi] remove unused import

* [abi] add missing license header

* [abi] fix clippy warning

* [primitives] add KeyPtr to ink_primitives

* [core] use KeyPtr through ink_primitives and add ExtKeyPtr trait

* [abi] use KeyPtr of ink_primitives

* [abi] make EnumLayout use StructLayout

* [abi] implement custom serde::Serialize for LayoutKey

* [abi] implement IntoCompact for layout2 module types

* [abi] add doc comment

* [abi] apply rustfmt

* [abi] add unit test for LayoutKey serialization

* [abi] rename ArrayLayout::array -> new

* [abi] add dispatch_key field to enum layout

* [abi] derive From for all Layout variants

* [abi] add unit tests for the new layout traits and data structures

* [abi] add experimental CellLayout

* [abi] make tests work again for layout2

* [abi] use specialized serializer function for LayoutKey

* [abi] refactor UnboundedLayout

* [abi] add unit test for UnboundedLayout

* [abi] apply rustfmt

* [core/derive] slightly refactor code

* [abi] simplify enum test

* [primitives] derive Debug, Copy and Clone for KeyPtr

* [abi] simplify CellLayout::new

* [abi] fix calling incorrect constructor for LayoutKey

* [abi] move layout2 module file into directory

* [core] add StorageLayout trait to storage2 module

* [abi_derive, core_derive] remove unnecessary extern crate proc_macro

* [core] imply ink-generate-abi feature by std feature

* [core] derive Metadata for env types for std feature

* [core] add Key, Hash, AccountId and String StorageLayout impls

* [core/derive] add initial structure for StorageLayout derive

* [core] add StorageLayout impls for some more prelude types

* [core] fix Box<T> impl for StorageLayout trait

* [core] implement StorageLayout for storage2::{Memory, Pack, LazyArray}

* [core] fix StorageLayout impl for LazyArray

* [core] implement StorageLayout for LazyIndexMap

* [abi] add HashLayout

* [abi] rewrite UnboundedLayout test to HashLayout test

* [abi] remove unbounded layout

* [abi, core] apply rustfmt

* [core] add initial skeleton for StorageLayout tests

* [core] add StorageLayout impls for Lazy, LazyCell and LazyHashMap

* [core] add StorageLayout impls for Option and Result

* [core] add LayoutCryptoHasher trait

* [core] fix StorageLayout impl for LazyHashMap

* [core] apply rustfmt

* [core] add StorageLayout impl for storage2::Vec

* [core] add StorageLayout for storage2::SmallVec

* [core] implement StorageLayout for storage2::Stash

* [core] implement StorageLayout for storage BitStash, Bitvec and HashMap

* [core] improve StorageLayout impl for storage2::Vec

* [core] apply rustfmt

* [abi] fix clippy warning

* [core] add StorageLayout impl for storage2::alloc::Box

* [core] add StorageLayout impl for DynamicAllocator

* [core/derive] impl StorageLayout derive for struct items

* [core/derive] make StorageLayout derive work for enum items

* [core/derive] fix expansion for nested enums

* [core/derive] fix a bug with nested enums

* [core/derive] add unit test for MixedEnum

* [core/derive] apply rustfmt

* [lang] add revision 2 module

* [core] remove generic T: EnvTypes param from Dispatch trait

* [lang] remove unnecessary import

* [lang] remove unnecessary generic parameter

* [lang/macro] generate codegen for the new v2 traits

* [core] re-export SpreadLayout and PackedLayout macros from within ink_core

* [lang] further adjustments to make ink_lang_macro work with storage2

* [lang, core] apply rustfmt

* [lang] fix clippy warning

* [lang] fix some bugs with constructors without inputs

* [examples] adjust the Flipper example contract for the changes

* [lang] remove codegen for testing ink! contracts

No longer needed.

* [lang] remove test-env crate feature

* [lang] minor improvements to EnvAccess utility type

* [examples] remove unused import for Flipper

* [examples] remove test-env crate feature for Flipper

* [lang] remove unused IdentType::span method

* [examples] Flipper: adjust contract for ink_lang changes

* [examples] adjust Erc20 for the ink_lang changes

* [examples] fix some indentation in Cargo.toml

* [examples] adjust DNS contract for ink_lang changes

* [examples] adjust ERC721 for ink_lang changes

There is still a bug that we need to fix in ink_core.

* [example] adjust lib.rs of ERC721 to ink_lang changes

* [examples] adjust Delegator example contract for ink_lang changes

* [lang_macro] generate SpreadLayout and PackedLayout impls for cross-calling wrappers

* [core] release storage2::Stash::entries() iterator for non-testing API

* [core] add SpreadLayout and PackedLayout impls for () type

* [examples] convert multisig contract example to new ink_lang

* [examples] fix incrementer Cargo.toml indentations

* [examples] adjust runtime-storage example contract for ink_lang changes

* [core] apply rustfmt

* [lang] generate correct attributes for messages

* [examples] make use of derive(Default) for DNS example

* [lang_macro] improve some ink! error messages

* [lang_macro] update all compile tests

* [examples] multisig: ignore doc test

This needs serious fixing later! @athei

* [lang] remove old ink_lang abstractions

* [lang] remove no longer needed ink_lang modules

* [lang_macro] add compile test for derive on storage struct

* [examples] ignore failing doc test

* [examples] actually ignore the failing doc-test for multi-sig

* [lang] move v2 module back to origin

* [lang_macro] adjust codegen for new dispatch module structure of ink_lang

* [lang_macro] no longer impl ink_core::{Flush, AllocateUsing} for ink! dependencies

* [lang_macro] use root namespaces in codegen everywhere

* [lang] apply rustfmt

* [lang_macro] use only root namespaces in codegen (forgot some)

* [lang] remove nightly Rust feature usage

* [core] re-export StorageLayout from ink_core::storage2::traits

* [lang,abi] adjust ink! metadata generation codegen to new layout

* [lang] use root namespaces in codegen

* [examples] apply rustfmt

* [lang] update cross-calling codegen for new storage layout

* [examples] update Delegator example contract

* [examples] apply rustfmt

* [abi] remove StorageLayout trait from ink_abi crate

* [examples] apply rustfmt

* [examples] fix clippy warning

* [examples] fix multisig_plain contract

* [examples] apply rustfmt

* [examples] fix clippy warning

* [examples] remove commented out code from multisig_plain example

* [lang] refactor codegen for contract storage struct

* [lang] fix unused import warning

* [lang] eliminate CrossCallingConflictCfg

* [lang] do not generate normal storage struct as dependency

* [lang] re-introduce cross calling conflict cfg codegen

* [lang/macro] refactor codegen for cross-calling

* [lang] add new traits for Event connectors

* [lang/macro] use connectors API for event codegen

* [lang/macro] apply rustfmt

* [lang/macro] remove out-of-ink-module export

* [abi] fix selector encoding

* [lang/macro] fix unused warning

* [examples] adjust example smart contracts for recents ink_lang_macro changes

* [abi] fix unit test for selector

* [chores] update README ink! example

* [alloc] silence warnings of unused unsafe for core::intrinsics::abort

* [examples] apply rustfmt

* [lang/macro] fix codegen for `cargo test`

* [*] replace ink-generate-abi crate feature everywhere with std

* [examples] fix Cargo.toml for generating metadata

* [examples] move flipper/src/lib.rs one up

* [examples] move lib.rs to root folder

* [examples] fix Cargo.toml of ERC721

* [examples] apply rustfmt to ERC20

* [examples] apply rustfmt to ERC721

* [examples] apply rustfmt to all examples

* [abi] remove unused serialize_selector function

* [examples] fix bug that DNS example still used type-metadata crate

* [example] fix bug in multisig_plain example

* Move spec tests to separate file

* Add contract spec serialization test

* Camel case field names

* Encode selector as hex string

* Move specs module back to top level

* Move layout test to tests.rs

* Layout externally tagged enums & camelCase

* Format code

* Rename TypeSpec::ty -> TypeSpec::id

* TEMPORARY: Use my type-metadata branch

* Derive TypeInfo for Key

* Switch from type_metadata to scale_info

* Convert layout to using scale-info

* Fix scale-info optional dependencies

* Fmt

* Fix up straggling type-metadata dependency

* scake-info master

* Use scale-info from crates.io

* oops

* Fix compilation errors

* Fmt

* Fix examples manifests

* Remove redundant into()

* Initial tests

* Add more tests

* Clean tests

* Add invalid transfer test

* Fix test fmt

* [core] fix unused warning

* [*] bump version 2.0.0 -> 2.1.0

* [*] initial swipe over codebase to tag 2.0.0 release

* [*] fix a number of issues with the previous version setup

* [examples] individual link-args for xargo build

* Add xbuild config to examples

* Run delegator script as nightly

* Enable rlib for flipper

* examples: remove cargo config files

* examples: remove xbuild config

* [core] initial implementation of env revision 3

* add engine abstraction layer and implement api functions

* add support for dispatch_call to env3

* add missing invoke_runtime to api.rs

* [core] fix restore_contract docs

* [core] initial implementation of off-chain environment

* [core] clean-up of env3 fundamental types

* [core] add WasmEnv::reset_buffer

* show test submodule of env3 when compiling with rustdoc

* [core] initial implementation of the off-chain env instance

Also many other adjustments.

* [core] further enhancements to off-chain env

* [core] implement untyped Env for off-chain environment

* [core] implemented a good chunk of TypedEnv for the off-chain environment

* [core] minor improvements to env3

* [core] further improvements and additions to test-api of env3

* [core] remove former test-api file

* [core] env3: add support for ext_tombstone_deposit

* [core] env3: add setting of rent allowance in off-chain env

* [core] env3: remove buffer.rs

* [core] env3: remove property.rs

* [core] env3: mark some TypedEnv methods as not-todo

* [core] env3: enable off-chain api for non test/doc builds

* [core] env3: use a static buffer instead of Vec<u8>

* [core] env3: move static buffer into its own module

* fix doc comment

Co-Authored-By: Michael Müller <mich@elmueller.net>

* [core] env3: add missing license header

* [core] env3: remove deprecated doc note

* [core] env3: add off-chain {set/get}_runtime_storage

* [core] env3: add off-chain invoke_runtime dispatch

This also enables support for registering custom runtime call handlers.

* [core] env3: slightly improve env3::random docs comment

* [core] env3: move off-chain errors under EnvError

* [core] env3: add ext_random support for the off-chain environment

* [core] env3: minor clean ups

* [core] env3: improve TypedEncoded::assign

* [core] env3: un-mut some variables

* [core] env3: fix some clippy warnings

* [core] env3: add past_printlns to off-chain test api

* [core] env3: minor refactoring

* [core] env3: apply rustfmt

* [core] env3: clean up of call and instantiate contract

* [core] env3: rename moment -> time_stamp

* [core] env3: make get_runtime_storage return a Result instead of RetCode

* [core] env3: remove unneeded import

* [core] env3: add some trait impls for EnvTypes::Hash

* [core] env3: remove last remaining usages of RetCode

* [core] env3: refactor some errors

* [core] env3: document the EnvError enum

* [core] env3: add impls for fire methods on call and create builders

* [core] env3: add doc comment to past_printlns

* [core] env3: apply rustfmt

* [core] env3: update license headers

* [core] env3: support querying and emitting of events in off-chain env

* [core] env3: missing license header adjustment

* [core] env3: apply rustfmt

* [core] env3: rename some methods in off-chain test-api

* [core] env3: add doc comment to test::emitted_events

* [core] env3: add stub for test::advance_block

* [core] env3: rename some more test API methods

* [core] env3: initialize entropy of block randomly

* [core] env3: extend EnvTypes trait bounds

This change makes the trait bounds more similar to what Substrate defines.

* [core] env3: document SimpleArithmetic trait

* [core] env3: add From<u32> to SimpleArithmetic trait

* [core] env3: made some trait bounds more explicit in SimpleArithmetic trait

* [core] env3: add comment describing potential future extensions to SimpleArithmetic trait

* [core] env3: rename EnvTypes::Moment to TimeStamp

* [core] env3: add block_time to ChainSpec

* [core] env3: remove CodeDb again

Not needed right now. Maybe re-added at a later point.

* [core] env3: apply rustfmt

* [core] env3: implement off-chain test::advance_block

* [core] env3: fix bug in off-chain test::advance_block impl

* [core] env3: made SimpleArithmetic trait more explicit towards Output types

* [core] env3: add default initialization routines for off-chain environment

* [core] env3: remove test::create_user_account for now

* [core] env3: fix missing renaming from Moment -> TimeStamp

* [core] env3: impl PartialEq and Eq for off-chain error types

* [core] env3: add test::run_test for off-chain testing with default setup

* [core] env3: fix several minor bugs with the off-chain environment

* [core] convert key.rs tests to new env3

* [core] remove commented out code in key.rs tests

* [core] evn3: add test::get_contract_storage_rw

* [core] use env3 instead of env1 in storage cells

* [core] integrate env3 into storage::TypedChunk

* [core] remove storage::RawChunk and NonCloneMarker

* [core] adjust SyncChunk slightly for TypedChunk modifications

* [core] simplify transitioned env3 tests for TypedChunk

* [core] transition tests for SynChunk to env3

* [core] transition storage::Stash tests to env3

* [core] transition storage::HashMap tests to env3

* [core] transition storage::BinaryHeap tests to env3

* [lang] remove the entire ink! lang crate

It has been deprecated for a whole while.

* [model] remove ink! model crate entirely

It has been deprecated for a whole while.

* [core] remove the old env1 sub-module of ink_core

It has been deprecated for a whole while.

* [examples] remove model examples

* [examples] remove lang examples

* [examples] remove core examples

* remove "If given too few endowment" from docs

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

* fix doc comment

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

* fix doc comment

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

* [lang2] initial steps towards basing on env3 instead of env2

With this commit `cargo contract build` already works.
However, cargo test etc. are still broken.

* [lang2] make macros work for `cargo test`

* [core, lang2] make contracts compile as ink-as-dependency

* [lang2] make events work for ink_lang2 on env3

* [lang2] remove AccessEnv - no longer needed

* [core] remove env2

* [lang2] fix tests

- Fix warning in ink_lang2
- Remove no longer needed test case
- Adjust some passing tests after default module import removal

* [*] apply rustfmt

* [lang2] silence unused warning for now

* [core] rename {create|Create}* to {instantiate|Instantiate}*

- CreateBuilder -> InstantiateBuilder
- CreateParams -> InstantiateParams
- create -> instantiate

* [core] rename endowment -> transferred_value for CallBuilder/Params

* [examples] adjust Delegator contracts for recents changes

* [core] rename now_in_ms -> block_timestamp

* [core] follow-up of the call renamings (transferred_value)

* [lang2] rename now_in_ms -> block_timestamp

* [examples] move examples out of the examples/lang2 folder

* [examples] fix runtime-storage example contract

* [examples] fix Flipper contract

* [examples] fix Incrementer contract

* [examples] fix Erc20 contract

* [utils] add Key and byte_utils to ink_utils

* [utils -> primitives] rename ink_utils -> ink_primitives

* [*] move all links from ink_utils -> ink_primitives

* [primitives] update Cargo.toml description

* [*] use ink_primitives::Key remove ink_core::Key

* [primitives] refactor new crate, make it more usable in ink! context

* [*] relink to ink_primitives for Key usage

* [abi] refactor macros and relink to ink_primitives::Key

* [lang2] fix usage of renamed Create{Builder, Params}

* [examples] fix examples under recent changes with ink_primitives

* [*] apply rustfmt

* [lang2/macro] remove deprecated feature usage of proc_macro_hygiene

* [examples] remove deprecated proc_macro_hygiene feature

* [core] remove test_utils

* [core] rename env3 to env

* [*] rename all usages of env3 to env

* [core] fix feature usage in num-traits of ink_core Cargo.toml

* [*] update README

* [primitives] conditionally compile type_metadata from ink_primitives

* [core] make env::get_contract_storage return Option<Result<T>>

* [core] fix some faulty doc comments

* [ci] fix GitLab CI

* [primitives] fix no_std compilation

* [primitives] fix warning

* [core] make `rand` dependency optional for `std` crate feature

* [core] remove the test-env crate feature from the ink_core crate

* [core,primitives] move some tests from primitives to core

* [lang] move lang2/ to lang/

* [*] rename all instances of ink_lang2 or lang2 to ink_lang or lang

* [lang/macro] fix ink_primitives dependency

* [*] apply rustfmt

* [core] fix clippy warning

* [ci] eliminate README from examples CI checks

* [examples] apply rustfmt

* [lang/macro] improve event codegen

* [core] rename TimeStamp/time_stamp to Timestamp/timestamp

* [lang] remove unused extern crate alloc

* [core] rename env::address to env::account_id

* [lang] perform renamings on ink_lang::EnvAccess but with deprecation instead of removal

* [core] fix missing time_stamp renamings

* [lang] fix missing TimeStamp renamings

* improve doc comment

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

* improve doc comment

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

* rename create_contract -> instantiate_contract

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

* rename create_contract -> instantiate_contract

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

* improve doc comment

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

* impr

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

* improve doc comment

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

* improve doc comment

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

* improve doc comment

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

* rename endowment -> transferred_value

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

* improve doc comment

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

* rename create_contract -> instantiate_contract

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

* rename create_contract -> instantiate_contract

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

* rename time stamp to timestamp

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

* rename SRML to env in docs

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

* remove SRML word from docs

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

* remove SRML word from docs

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

* [lang] fix doc comment for filtered_keys in restore_contract

* [core] rename create_contract -> instantiate_contract

* [core] rename create_contract -> instantiate_contract

* [core] fix some renamings around endowment -> transferred_value

* [lang] rename create_contract -> instantiate_contract follow-up

* [core] apply rustfmt

* [core] improve restore_contract doc comment

* [core, lang] link to ink_core::env::* doc comments from all api places

* [core] apply rustfmt

Co-authored-by: Michael Müller <mich@elmueller.net>
Co-authored-by: Andrew Jones <ascjones@gmail.com>