Added all of the icons to be used

As of now, the npctxt format and regular program files are done. I have
yet to port them over and be used into the program as I'm waiting on the
.txt file association icon to get done
Added last file format & notice
Changes

Added a changelog that I will expand between versions, also it
apparently copied ICOs into the projects root along with some MainUI
changes, an embedded thank you RTF file, and beginning of a settings
dialog. Yep :)
Merge pull request #14 from Luigifan/master

Repo Sync