# Transducers Changelog

## 0.5.4 - 2023-11-10
### Fixed
- Changed the prefixing used in the `(transducers mapping)` module to `srfi-146%` from `srfi-146#`
  because of a bug in how identifiers are resolved. This shouldn't change any downstream code or
  APIs, but should play nicer with e.g. salmonella and bugs.call-cc.org

## 0.5.3 - 2023-11-10
### Removed
- Dependency on SRFI-143, in favour of using `(chicken fixnum)`. SRFI-143 is fairly unoptimized to
  the point that I see it frequently as a hotspot when running chicken-profile on e.g.
  fixnum-range-fold. If you want to port transducers to another Scheme, I've kept the API consistent
  by renaming procedures from `(chicken fixnum)` for ease of porting.

## 0.5.2 - 2023-11-09
### Changed
- Default debug level is now -d2. This was done for the sake of instrumenting / tracing transducers
  better. If this causes a significant performance hit for you please file an issue!

### Fixed
- A bug in `collect-reverse-list` where the sentinel value was ignored.

## 0.5.1 - 2023-08-22
### Fixed
- Exported transducible type-class procedures / types from (transducers) meta library.

## 0.5.0 - 2023-08-22
### Added
- Added `<transducible>` type-classes to library.

## 0.4.2 - 2023-08-16
### Fixed
- Fixed a bug in the implementations of `zip-range` and `interleave-range` that would cause them to
  exit the transduction early.

## 0.4.1 - 2023-07-19
### Fixed
- Adds r7rs to dependencies, which should make the egg build by default. Previously this wasn't part
  of the dependencies so one had to install r7rs first, and then this egg.

## 0.4.0 - 2023-04-16
### Added
- Adds support for using SRFI 146 mappings / hashmaps with transducers.

## 0.3.1 - 2023-04-02
### Changed
- Replaced `#!optional` declarations in defines with use of case-lambda, since R7RS does not have an
  `#!optional` keyword / extension syntax.

## 0.3.0 - 2023-04-02
### Changed
- Egg is now provided as an R7RS module.

## 0.2.0 - 2023-01-13
### Added
- `collect-sum` and `collect-product` collectors

### Changed
- `any` / `all` / `count` / `first` / `last` have been renamed to be
  `collect-{any,all,count,first,last}`. All collector procedures start with the word `collect-` now.
- All collectors accept an optional sentinel argument now.
- All collectors should now be wrapped in parenthesis. For example:

```scheme
(import transducers)

;; Previously
(transduce list-fold values collect-list (list 1 2 3))

;; Now
(transduce list-fold values (collect-list) (list 1 2 3))
```

## 0.1.0 - 2023-01-04
### Added
- First version of transducers!
- Adds all base / lists / vectors / ports libraries
- Documentation
- Tests