New methods and features for 0.6.0 (#64)

* feat: squeeze manipulation routine with axis support

* feat: NDArray::full implementation

* feat: NDArray::fill release

* feat: argmin and argmax with axis support

* feat: NDArray::positive implementation

* feat: NDArray::reciprocal implementation

* feat: NDArray::reciprocal stubs

* feat: NDArray::reciprocal stubs

* feat: NDArray::swapaxes implementation
feat: NDArray::transpose permutation

* feat: NDArray::swapaxes and new transpose stubs

* feat: NDArray::argmin and argmax keepdims option

* feat: NDArray::rollaxis implementation

* feat: NDArray::moveaxis implementation

* fix: improvements to the slicing mechanism

* feat: ndarray slicing stubs

* fix: fixed slicing shape when arrays contain values

* feat: hstack, vstack and dstack implementation

* feat: column_stack implementation

* feat: column_stack PHP stubs

* feat: NDArray::concatenate implementation

* feat: NDArray::append implementation

* feat: NDArray::append stubs

* docs: update README.md

* fix: NDArray::append memory leak when using PHP arrays as arguments.

Author: henrique-borba

README.md

@@ -33,7 +33,23 @@ NumPower aims to manage memory more efficiently than a matrix in PHP arrays
 - **Optional (GPU)**: CUBLAS, CUDA Build Toolkit and cuDNN
 - **Optional (Image)**: PHP-GD
 
-## Composer Install
+## Compiling
+
+``` 
+$ phpize
+$ ./configure
+$ make install
+```
+
+## Compiling with GPU (CUDA) support
+
+``` 
+$ phpize
+$ ./configure --with-cuda
+$ make install-cuda
+```
+
+## Composer install
 The composer package provides a stubs file to facilitate autocomplete in the IDE. To install, simply run the command below in your environment with composer installed:
 
 ```bash
@@ -42,7 +58,7 @@ $ composer require numpower/numpower
 
 The composer package will follow the same versioning as the extension.
 
-## GPU Support
+## GPU support
 
 If you have an NVIDIA graphics card with CUDA support, you can use your graphics card 
 to perform operations. To do this, just copy your array to the GPU memory.