Add logging (spdlog) and abstract the api.

.gitignore

@@ -1,3 +1,23 @@
+# Exclude folders
+bin/
+bin-int/
+external/
+
+# Exclude files
+
+# Temporary excludes
+
+Matrix2d.cpp
+Matrix3.cpp
+Matrix4.cpp
+Vector4.cpp
+
+Matrix3.h
+Matrix4.h
+Vector4.h
+
+############################################################################################
+
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 ##
@@ -401,13 +421,4 @@ FodyWeavers.xsd
 
 *.sln
 *.vcxproj
-*.filters
-
-
-
-
-# Exclude other folders
-
-bin/
-bin-int/
-external/
+*.filters