cc: rename axes -> components

Component name feels more appropriate

Author: zmij

README.md

@@ -180,7 +180,7 @@ std::cout << io::pretty << m1 << io::ugly << "\n";
 
 #### Memory buffers as vectors
 
-A memory buffer can be accessed as a container of vectors with certain properties (size, axes). A constant buffer can be used to read data in a structured manner, a non-costant buffer can be used to modify data in the buffer via `vector_view` and `memory_vector_view` utility classes. A `vector_view` is for reading a single element, `memory_vector_view` is for using a buffer as a 'container' of vectors.
+A memory buffer can be accessed as a container of vectors with certain properties (size, components). A constant buffer can be used to read data in a structured manner, a non-costant buffer can be used to modify data in the buffer via `vector_view` and `memory_vector_view` utility classes. A `vector_view` is for reading a single element, `memory_vector_view` is for using a buffer as a 'container' of vectors.
 
 ```C++
 #include <psst/math/vector_view.hpp>

benchmark/make_test_data.hpp

@@ -22,7 +22,7 @@ using dimension_count = std::integral_constant<std::size_t, N>;
 //  Vector 3
 //----------------------------------------------------------------------------
 template <typename T>
-constexpr vector<T, 3, axes::xyzw> make_test_vector(dimension_count<3> const&)
+constexpr vector<T, 3, components::xyzw> make_test_vector(dimension_count<3> const&)
 {
     return {1, 2, 3};
 }
@@ -31,7 +31,7 @@ constexpr vector<T, 3, axes::xyzw> make_test_vector(dimension_count<3> const&)
 //  Vector 4
 //----------------------------------------------------------------------------
 template <typename T>
-constexpr vector<T, 4, axes::xyzw> make_test_vector(dimension_count<4> const&)
+constexpr vector<T, 4, components::xyzw> make_test_vector(dimension_count<4> const&)
 {
     return {1, 2, 3, 4};
 }
@@ -40,7 +40,7 @@ constexpr vector<T, 4, axes::xyzw> make_test_vector(dimension_count<4> const&)
 //  Vector 10
 //----------------------------------------------------------------------------
 template <typename T>
-constexpr vector<T, 10, axes::none> make_test_vector(dimension_count<10> const&)
+constexpr vector<T, 10, components::none> make_test_vector(dimension_count<10> const&)
 {
     return {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
 }
@@ -115,7 +115,7 @@ constexpr matrix<T, 4, 3> make_test_matrix(traits::matrix_size<4, 3> const&)
 //  Matrix 10x10
 //----------------------------------------------------------------------------
 template <typename T>
-constexpr matrix<T, 10, 10, axes::none> make_test_matrix(traits::matrix_size<10, 10> const&)
+constexpr matrix<T, 10, 10, components::none> make_test_matrix(traits::matrix_size<10, 10> const&)
 {
     // clang-format off
     return