Updated changelog for managed v1.3 release
[client][managed] fixed warnings
[client][managed][offline] config key prefixes should be static
[client][managed][offline] allow underscore and hyphen in queryId
Merge pull request #501 from hasankhan/staticprefix

[client][managed][offline] config key prefixes should be static
Merge pull request #502 from hasankhan/changelog1.3

Updated changelog for managed v1.3 release
Update CHANGELOG.md
Update CHANGELOG.md
Update CHANGELOG.md
Update CHANGELOG.md
Merge branch 'dev' into offline