August 2020 release

• BREAKING: Stream properties now contain the property name in the interface/class for request builders to avoid naming conflicts (entities with two stream properties)
• adds support for namespaces/packages #429
• new models #428
• potential arithmetic overflow fix #424
• chunk size consideration fixes for customized input streams #397
• readme updates #411
• tooling metadata refresh #427
• additional constructor for DefaultHttpProvider #364
• code scanning worklow #416
• bumped gson from 2.8.2 to 2.8.6 #420
• merged missing changes from master #414
• bumps microsoft-graph-core to from 1.0.0 to 1.0.1
• adds dependabot #418
• fixes okhttp leaks #406
• fixes put not working on some additional data managers #374
• fixes Edm.Decimal which was not mapped at all
• fixes a bug where conflicting overload methods would be generated
• fixes an issue where child entities request builders would be missing navigation properties from parents
• switches to selective imports instead of star imports for build performance