## Description
This PR:
* moves all of the `types/errors` code to a new `errors` go module, except:
* the `RootCodespace` errors in `types/errors` stay there
* ABCI stuff that depends on tendermint stays in `types/errors
* adds aliases to everything in `types/errors` referencing `errors` so **this is not a breaking change**
This will allow standalone go modules to use the same error types as the SDK. In particular, I want the `orm` to reference `errors` and then the SDK will be able to import `orm` and it can stay standalone. The same could apply to the `db` module.
After this PR the plan is to:
* tag `github.com/cosmos/cosmos-sdk/errors` as `v1.0` 🎉
* remove the `replace` directive for `errors` in the main SDK `go.mod`
---
### Author Checklist
*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*
I have...
- [x] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [x] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [x] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed
### Reviewers Checklist
*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*
I have...
- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)
Refactor
* No more decorators, but rather types.AntiHandler
* No more handlers, but rather types.MsgHandler
* Ability to pass "stores" in NewXYZHandler()
* Coins live in types, and Accounts have coins
* Coinstore -> bank
* wip: tests and fixes for kvstore iteration
* update for latest tmlibs
* types compiles
* x/coin almost compiles
* x/coin: move things out of the way so it builds
* rebase fixes
* update glide
* add test for ChainDecorators