Update README.txt

v1.4.0 release notes
Update README.txt

Minor edit for v1.4.0 release notes
Update modlist.txt

v1.4.0 changes
Update README.txt

Minor edit for v1.4.0 release notes
Merge pull request #26 from VictiniX888/v1.4.0

v1.4.0 (closes #13, closes #23, closes #25)