Add COPYRIGHT file and update copyright & licence notices#591

Merged

dhardy merged 4 commits intorust-random:masterfrom dhardy:copy

Sep 10, 2018

+175-163

Commits on Aug 16, 2018

Add COPYRIGHT file and update copyright & licence notices
dhardy
committed

Commits on Aug 24, 2018

Fix COPYRIGHT file and copy to sub-projects
dhardy
committed

Commits on Sep 10, 2018

Revert copyright changes to files with content from MaximoB and rohitjoshi
dhardy
committed
Remove references to COPYRIGHT file which are not needed
dhardy
committed