Merge pull request #52 from Torndeco/dev

V17
Update Readme.txt
Merge pull request #53 from TobsA13/stable

Misspelling in Readme.txt
Merge pull request #57 from Torndeco/dev

V18
Update Changelog.txt
Merge pull request #58 from Torndeco/dev

V18 Test Apps
Update ext.cpp
Merge pull request #59 from Torndeco/stable

Sync with  Stable Branch V18