bigly changes (see description)

- use LdrRegisterDllNotification instead of LoadLibraryExW for patching
** LoadLibraryExW is currently still hooked for the UpdatePack7 compatibility fix, I'm looking into other alternatives
- more robust error checking
- refactored a lot of code to be more reusable
- header guards
- better logging framework
- tighter permissions on the unload event
- probably other stuff I forgot about

appveyor.yml

@@ -1,8 +1,8 @@
 version: 0.7.2.{build}
 skip_commits:
   files:
-    - README.md
-    - CONTRIBUTING.md
+    - **/*.md
+    - **/*.aip
 image: Visual Studio 2017
 configuration: Release
 platform: