* more strict null checks in base browser code
* revert changes to radiobutton
* fix some more minor things, enable strict null check in pipelines
* formatting
* fix compile errors
* make null undefined
* more null to undefined
* working through memory issues
* work in progress
* add missing value
* work in progress
* more work in progress
* various more memory fixes
* additional improvements
* fix imports
* change test that we dispose queries on close not dispose
* update tests