[doc][changelog] Change log for the release v0.6 (#201)

As title.

Author: forfudan

README.MD

@@ -42,26 +42,26 @@ Our primary objective is to develop a fast, comprehensive numerics library in Mo
 
 Core data types:
 
-- Native n-dimensional array (`numojo.core.ndarray.NDArray`).
-- Native 2-dimensional array, i.e., matrix (`numojo.core.matrix.Matrix`).
-- Native n-dimensional complex array (`numojo.core.complex_ndarray.ComplexNDArray`)
+- Native n-dimensional array (`numojo.NDArray`).
+- Native 2-dimensional array, i.e., matrix (`numojo.Matrix`).
+- Native n-dimensional complex array (`numojo.ComplexNDArray`)
 - Native fixed-dimension array (to be implemented when trait parameterization is available).
 
 Routines and objects:
 
-- Array creation routines (`numojo.routines.creation`)
-- Array manipulation routines (`numojo.routines.manipulation`)
-- Input and output (`numojo.routines.io`)
-- Linear algebra (`numojo.routines.linalg`)
-- Logic functions (`numojo.routines.logic`)
-- Mathematical functions (`numojo.routines.math`)
-- Exponents and logarithms (`numojo.routines.exponents`)
-- Extrema finding (`numojo.routines.extrema`)
-- Rounding (`numojo.routines.rounding`)
-- Trigonometric functions (`numojo.routines.trig`)
-- Random sampling (`numojo.routines.random`)
-- Sorting, searching, and counting (`numojo.routines.sorting`, `numojo.routines.searching`)
-- Statistics (`numojo.routines.statistics`)
+- Array creation routines (`numojo.creation`)
+- Array manipulation routines (`numojo.manipulation`)
+- Input and output (`numojo.io`)
+- Linear algebra (`numojo.linalg`)
+- Logic functions (`numojo.logic`)
+- Mathematical functions (`numojo.math`)
+- Exponents and logarithms (`numojo.exponents`)
+- Extrema finding (`numojo.extrema`)
+- Rounding (`numojo.rounding`)
+- Trigonometric functions (`numojo.trig`)
+- Random sampling (`numojo.random`)
+- Sorting and searching (`numojo.sorting`, `numojo.searching`)
+- Statistics (`numojo.statistics`)
 - etc...
 
 Please find all the available functions and objects [here](docs/features.md).
@@ -201,7 +201,7 @@ You can add `numojo` in the dependencies section of your toml file.
 
 ```toml
 [dependencies]
-numojo = "==0.5"
+numojo = "=0.6"
 ```
 
 ### Build package

docs/changelog.md

@@ -2,6 +2,61 @@
 
 This is a list of RELEASED changes for the NuMojo Package.
 
+## 28/02/2025 (v0.6)
+
+### ⭐️ New
+
+- Implement the `broadcast_to()` method for `NDArray`. This function broadcasts an array to any compatible shape ([PR #202](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/202)).
+- Add the `apply_along_axis()` function that executes a function working on 1-d arrays on n-d arrays along the given axis ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213), [PR #218](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/218)).
+- Implement the `diagonal()` function and the `NDArray.diagonal()` method ([PR #217](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/217)).
+- Implement the `compress()` function and the `NDArray.compress()` method ([PR #219](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/219)).
+- Implement the `clip()` function and the `NDArray.clip()` method  ([PR #220](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/220)).
+- Add the `_NDAxisIter` type as a iterator that returns, in each iteration, a 1-d array along that axis. The iterator traverse the array either by C-order or F-order ([PR #212](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/212), [PR #214](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/214)).
+- Add the `ith()` method to the `_NDArrayIter` type and to the `_NDIter` type to get the i-th item ([PR #219](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/219), [PR #221](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/221)).
+- Add the `Flags` type for storing information on memory layout of arrays. The `Flags` type replaces the current `Dict[String, Bool]` type ([PR #210](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/210), [PR #214](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/214)).
+- Add the `swapaxes()` methods for the `NDArrayShape` type and the `NDArrayStrides` type ([PR #221](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/221)).
+- Add the `offset()` methods for the `Item` type to get the offset of an index in the underlying buffer. Allow the `Item` object to be constructed from index and shape ([PR #221](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/221)).
+
+### 🦋 Changed
+
+- Update the syntax to accommodate to Mojo 25.1 ([PR #211](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/211)).
+  - Change constructors, e.g., `str()` to `String()`.
+  - Change `index()` function to `Int()`.
+  - Change the function `isdigit()` to method.
+  - Stop using `NDArray.__init__()` to construct arrays but `NDArray()`.
+- Update functions in the `random` module:
+  - Add `randint()`, and accept `Shape` as the first argument ([PR #199](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/199)).
+- Update functions in the `statistics` module:
+  - Add the parameter `returned_dtype` to functions which defaults to `f64` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+  - Add `variance()` and `std()` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)). Allow calculating variance and std of an array by axis ([PR #207](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/207)).
+  - Allow `median()` and `mode()` functions to work on any axis.
+- Update functions in the `sorting` module:
+  - Considerably improve the performance of `sort()` function ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213), [PR #214](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/214)).
+  - Allow `argsort` by any axis for both C-order and F-order arrays ([PR #214](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/214)).
+- Update function in the `math.extrema` module ([PR #216](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/216)):
+  - Allow the `max()` and `min()` functions to work on any axis.
+  - Update the `max()` and `min()` methods for the `NDArray` type.
+- Update the behaviors of 0-d array (numojo scalar). Although the syntax `a.item(0)` or `a[Item(0)]` is always preferred, we also allow some basic operations on 0-d array. 0-d array can now be unpacked to get the corresponding mojo scalar either by `[]` or by `item()` ([PR #209](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/209)).
+- Add boundary checks for `NDArrayShape` and `NDArrayStrides` to ensure safe use. Improve the docstring ([PR #205](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/205), [PR #206](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/206)).
+- Significantly increase the speed of printing large arrays ([PR #215](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/215)).
+- Replace the `NDArray.num_elements()` method by the `NDArray.size` attribute for all modules ([PR #216](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/216)).
+
+### ❌ Removed
+
+- Remove the `cumvariance`, `cumstd`, `cumpvariance`, `cumpstd` functions ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+- Remove the `maxT()` and `minT()` functions ([PR #216](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/216)).
+
+### 🛠️ Fixed
+
+- Re-write the `ravel()` function so that it will not break for F-order arrays ([PR #214](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/214)).
+- Fix the `NDArray.sort()` method (in-place sort). The default axis is changed to `-1` ([PR #217](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/217)).
+- Fix the `NDArray.__bool__()` method which may returns incorrect results ([PR #219](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/219)).
+
+### 📚 Documentatory and testing
+
+- Update the docstring of all methods belonging to the `NDArray` type, following the Mojo Docstring Style Guide. Provide more detailed error messages in the internal functions of `NDArray` to enhance clarity and traceability of errors ([PR #222](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/222)).
+- Updates the roadmap document according to our current progress ([PR #208](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/208)).
+
 ## 26/01/2025 (v0.5)
 
 ### ⭐️ New