Update version numbers post-release
Remove hard-coded links
IDE-917  Configuration kind element should not be unsettable as this causes problems with serialization logic of empty lists.
Merged develop-1.8 to 1.9
Merged in develop-1.9
Adding non_existent call
Removed non_exist method since it would encourage the creatation of lots of threads.  Created a fixed size thread pool for releases since these are generally fast and we don't want to artifically increase the size of the thread pool if not necessary.
Update version to 1.8.8
Merge branch 'develop-1_8' into develop-1.9
Merge branch 'develop-1.9' into develop-1.10
Relocate .gitignore