removing core sdk adding support for composer
changing sdk name access level
adding constants
moved tests to core repo
moved tests to core repo
updated installation instructions
updated stubs for composer
updated stubs for class redeclaration error in common namespace
updated stubs for class redeclaration bug
updating composer.json
Removed repositories in composer.json
Removed repositories local location in composer.json
constructing zip download url based on branch/tag
updated ChangeLog.txt and version for 98 release