# Changelog
`hslua-aeson` uses [PVP Versioning][].
## hslua-aeson-2.2.0
Released 2022-02-19.
- Relaxed upper bound for hslua-core and hslua-marshalling,
allowing version 2.2 of both packages.
## hslua-aeson-2.1.0
Released 2022-01-29.
- Update to hslua 2.1.
- Encode `null` as light userdata: The `NULL` pointer wrapped
into a light userdata is used to encode the JSON null value.
The `pushNull` function has been removed; use
`pushValue Null` instead.
- Types that are instances of `ToJSON` and `FromJSON` can be
marshalled/unmarshalled by using the new functions
`pushViaJSON` and `peekViaJSON`, respectively.
- The functions `peekVector`, `pushVector`, `peekScientific`,
`pushScientific`, `peekKeyMap`, and `pushKeyMap` are
considered an implementation detail and are no longer
exported.
- Array elements are now marked with a metatable. This avoids
the need for an extra `0` element in the table and offers
flexibility for users who want to give special behavior to
lists. The newly exported value `jsonarray` contains the name
of the registry slot under which the metatable is stored. The
table can be modified or replaced as required.
## hslua-aeson-2.0.1
Released 2021-12-28.
- Restored compatibility with aeson 1.5.
## hslua-aeson-2.0.0
Released 2021-12-17.
- Changed module name from `Foreign.Lua.Aeson` to
`HsLua.Aeson`.
- The Peekable and Pushable instances have been removed. The
package no longer defines orphaned instances.
- Updated hslua and aeson to the respective 2.0 version.
## hslua-aeson-1.0.3.1
Released 2020-10-16.
- Allow hslua-1.3.\*.
## hslua-aeson-1.0.3
Released 2020-08-15.
- Relaxed version constraint for hslua, allowing `hslua-1.2.*`.
## hslua-aeson-1.0.2
Released 2020-05-28
- Relaxed version constraint for aeson, allowing `aeson-1.5.*`.
- Update CI tests to check with GHC versions 8.0 through 8.10.
Compilation with GHC 7.10 is no longer tested.
- Bump to stackage LTS-14.
## hslua-aeson-1.0.1
Released 2020-04-03
- Relax version constraint for packages hashable and hslua,
allow `hashable-1.3` and `hslua-1.1.*`.
## hslua-aeson-1.0.0
Released 2019-09-24.
- Update to hslua 1.0.0
- Function `registerNull` has been replaced by `pushNull`.
Using `pushNull` has the advantage that users won’t have to
remember to register a special variable. Users who need a
global variable can set it by running
pushNull
setglobal "HSLUA_AESON_NULL"
## hslua-aeson-0.3.0
Released 2017-08-18.
- Update to hslua 0.8.0.
## hslua-aeson-0.2.0
Not publicly released.
- Update to hslua 0.6.0.
## hslua-aeson-0.1.0.4
Released 2017-04-17.
- Ensure compatibility with hslua 0.5.0.
## hslua-aeson-0.1.0.0
Released 2017-02-03.
- Initial release.
[PVP Versioning]: https://pvp.haskell.org