# Changelog for `symtegration`
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 the
[Haskell Package Versioning Policy](https://pvp.haskell.org/).
## Unreleased
### 0.6.1 - 2025-01-30
* Do not set `-Werror` by default in preparation for upload to Hackage.
### 0.6.0 - 2025-01-29
* For rational function integration, use complex logarithms if we are not
able to derive real function integrals.
* Add function to map polynomial coefficients monadically.
### 0.5.0 - 2025-01-20
* Implement integration by parts.
* Attempt integration by substitution after factoring out constant factors.
* Prefer positive integers in fraction denominators.
* Cancel out common integer fractions in $\frac{1}{x} \times y$ as well.
## 0.4.0 - 2025-01-14
* Integrate more rational functions.
* Find all real roots for integration involving solution of cubic equations.
* For integration involving solution of quartic equations,
find real roots for more special cases.
* Cancel out common integer factors in fractions.
* Fewer parentheses in Haskell code output.
* Fewer parentheses in LaTeX output.
* Test with GHC 9.12.1.
## 0.3.0 - 2025-01-05
* Implementation of Rioboo's algorithm.
* Supports integration of more rational functions.
* Integration of rational functions with rational number coefficients now
only limited by finding solutions for polynomials. As of yet, only
rational functions which require solutions for polymials up to degree 2
can be integrated.
* Output `pi` as `\pi` in LaTeX.
## 0.2.0 - 2025-01-02
* Integration of rational functions.
* Hermite reduction.
* Lazard-Rioboo-Trager integration.
* Improvements to LaTeX output.
* Remove simplification based on recursive heuristics,
which were much more ad hoc.
* Make `foldTerms` order consistent with simplification order,
from lower to higher terms.
## 0.1.0 - 2024-12-24
* Symbolic representation.
* Simplification.
* Basic integration support.
* Integration of polynomials.
* Integration of trigonometric functions.
* Integration of exponential and logarithmic functions.
* Integration by substitution.