# Revision history for inf-backprop
## [0.2.0.1] -- 2025-11-23
* **Dependency upper bounds**
* **Documentation fixes**
## 0.2.0.0 -- 2025-11-13
### Major Breaking Changes
* **Complete rewrite**:
The entire codebase has been rewritten from scratch with a redesigned architecture.
* Differentiation can now be applied to ordinary functions through the `RevDiff` type,
* rather than requiring special function wrappers.
### New Features
* **Core automatic differentiation**:
* `RevDiff` type for reverse-mode automatic differentiation
* Typeclass instances for `RevDiff`
* Support for higher-order derivatives through the derivative operator composition
* **NumHask integration**:
* Orphan instances for NumHask typeclasses, providing polymorphic numeric operations
* **Utility modules**:
* Sized vectors
* Tuple and triple manipulation utilities for multi-argument functions
* Vector utilities
* **Documentation**:
* Comprehensive tutorial introducing core concepts and usage patterns
## 0.1.0.0 -- 2023-05-12
* Basic types `Backprop`, `StartBackprop` etc.
* Basic function backprrop derivative implementations.
* `Isomorphism` tyepclass and extra instances for `IsomorphicTo` typeclass
from `isomorphism-class` package.
* Extra instancies for `Additive` typeclass from `numhask` package.
* Tutorial