Add changelog header and versioning policy

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Eugen Wissner 2019-12-26 13:05:17 +01:00
parent 62f3c34bfe
commit e3a495a778

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# Change Log
# Changelog
All notable changes to this project will be documented in this file.
The format is based on
[Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to
[Haskell Package Versioning Policy](https://pvp.haskell.org/).
## [Unreleased]
### Changed
- Renamed `AST.Definition` into `AST.ExecutableDefinition`.
- Rename `AST.Definition` into `AST.ExecutableDefinition`.
TypeSystemDefinition and TypeSystemExtension can also be definitions.
- Defined `AST.Definition` as
- Define `AST.Definition` as
`newtype Definition = ExecutableDefinition ExecutableDefinition` for now. It
should be soon extended to contain missing definition types.
- Removed types `AST.Field`, `AST.InlineFragment` and `AST.FragmentSpread`.
### Removed
- `AST.Field`, `AST.InlineFragment` and `AST.FragmentSpread`.
These types are only used in `AST.Selection` and `AST.Selection` contains now
3 corresponding data constructors, `Field`, `InlineFragment` and
`FragmentSpread`, instead of separate types. It simplifies pattern matching