From f317e67a8ba5c904fe0040464915e178dc8f4499 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Wed, 29 Jan 2025 00:07:26 +0100
Subject: [PATCH 1/7] To PR 199

---
 docs/changelog.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/changelog.md b/docs/changelog.md
index dc26a786..943cd076 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,6 +2,14 @@
 
 This is a list of RELEASED changes for the NuMojo Package.
 
+## xx/xx/2025 (v0.6)
+
+### ⭐️ New
+
+### 🦋 Changed
+
+- 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)).
+
 ## 26/01/2025 (v0.5)
 
 ### ⭐️ New

From dd65fd32ecde4e39af487606337c14ffd4f9f4a7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Wed, 29 Jan 2025 21:56:13 +0100
Subject: [PATCH 2/7] To PR 200

---
 docs/changelog.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/changelog.md b/docs/changelog.md
index 943cd076..dcd39996 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -9,6 +9,11 @@ This is a list of RELEASED changes for the NuMojo Package.
 ### 🦋 Changed
 
 - 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`. Add `variance()` and `std()` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+
+### ❌ Removed
+
+- Remove `cumvariance`, `cumstd`, `cumpvariance`, `cumpstd` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
 
 ## 26/01/2025 (v0.5)
 

From 33deaab1493504e99f3c3bf37bd99c86d2986564 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Sun, 2 Feb 2025 16:01:55 +0100
Subject: [PATCH 3/7] To PR 206

---
 docs/changelog.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/docs/changelog.md b/docs/changelog.md
index dcd39996..dddab6d0 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -6,10 +6,13 @@ This is a list of RELEASED changes for the NuMojo Package.
 
 ### ⭐️ New
 
+- Implement `broadcast_to()` for `NDArray`. The function broadcasts an ndarray to any compatible shape ([PR #202](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/202)).
+
 ### 🦋 Changed
 
 - 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`. Add `variance()` and `std()` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+- 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)).
 
 ### ❌ Removed
 

From 5490bf087fbb06932781c8e97968b41350556ea2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Sun, 16 Feb 2025 15:34:43 +0100
Subject: [PATCH 4/7] Up to 213

---
 docs/changelog.md | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/docs/changelog.md b/docs/changelog.md
index dddab6d0..5a80f794 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -6,18 +6,38 @@ This is a list of RELEASED changes for the NuMojo Package.
 
 ### ⭐️ New
 
-- Implement `broadcast_to()` for `NDArray`. The function broadcasts an ndarray to any compatible shape ([PR #202](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/202)).
+- For `NDArray` type:
+  - Implement `broadcast_to()` for `NDArray`. The function broadcasts an array to any compatible shape ([PR #202](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/202)).
+- Add `NDAxisIter` type as a iterator that returns, in each iteration, a 1-d array along that axis  ([PR #212](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/212)).
+- Add `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)).
+- Add `apply_func_on_array_with_dim_reduction()`, `apply_func_on_array_without_dim_reduction()` to allow applying functions working on 1-d array to any axis ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213)).
 
 ### 🦋 Changed
 
-- 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`. Add `variance()` and `std()` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+- 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 `sotring` module:
+  - Considerably improve the performance of `sort()` function ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213)).
+- 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)).
 
 ### ❌ Removed
 
 - Remove `cumvariance`, `cumstd`, `cumpvariance`, `cumpstd` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
 
+### 📚 Documentatory and testing
+
+- 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

From 134c3d4b3864536ef82043101c8307a04ad344b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Wed, 26 Feb 2025 20:21:01 +0100
Subject: [PATCH 5/7] Up to #222

---
 docs/changelog.md | 39 +++++++++++++++++++++++++++++----------
 1 file changed, 29 insertions(+), 10 deletions(-)

diff --git a/docs/changelog.md b/docs/changelog.md
index 5a80f794..36bcbe22 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,15 +2,20 @@
 
 This is a list of RELEASED changes for the NuMojo Package.
 
-## xx/xx/2025 (v0.6)
+## 28/02/2025 (v0.6)
 
 ### ⭐️ New
 
-- For `NDArray` type:
-  - Implement `broadcast_to()` for `NDArray`. The function broadcasts an array to any compatible shape ([PR #202](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/202)).
-- Add `NDAxisIter` type as a iterator that returns, in each iteration, a 1-d array along that axis  ([PR #212](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/212)).
-- Add `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)).
-- Add `apply_func_on_array_with_dim_reduction()`, `apply_func_on_array_without_dim_reduction()` to allow applying functions working on 1-d array to any axis ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213)).
+- 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
 
@@ -25,17 +30,31 @@ This is a list of RELEASED changes for the NuMojo Package.
   - 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 `sotring` module:
-  - Considerably improve the performance of `sort()` function ([PR #213](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/213)).
-- 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).
+- 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 `cumvariance`, `cumstd`, `cumpvariance`, `cumpstd` ([PR #200](https://github.com/Mojo-Numerics-and-Algorithms-group/NuMojo/pull/200)).
+- 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)

From fe2b3607f89119d512c1727637db80673fb9a035 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Wed, 26 Feb 2025 20:22:49 +0100
Subject: [PATCH 6/7] Update version number in readme

---
 README.MD | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.MD b/README.MD
index b3554478..5f7952e7 100644
--- a/README.MD
+++ b/README.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

From f7cb6073f7f9edf58cfe0eebd65e987b1b2bbdb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?ZHU=20Yuhao=20=E6=9C=B1=E5=AE=87=E6=B5=A9?=
 <dr.yuhao.zhu@outlook.com>
Date: Thu, 27 Feb 2025 16:42:19 +0100
Subject: [PATCH 7/7] Update readme file

---
 README.MD | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/README.MD b/README.MD
index 5f7952e7..6e2f1fa9 100644
--- a/README.MD
+++ b/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).