* Binary ops support
* Add support for nested expressions in loki
* Nested queries working
* Fixing tests
* Share more code between loki and prometheus query modellers
* Change to cascader with search
* Don't change to select on backspace
* Fix error on group select
* Simplify getOperationDef
* Set cascader wrapper to fixed width
* Add placeholder
* Fix tests and type errors
* Fix props for backward compatibility
* Add comments
* adding functions for prometheus queries
* WIP: functions added. Just categorizing them and testing each function out
* WIP: testing functions
* WIP verifying other functions
* Functions added and classified
* added tests
* moved bottomk to aggregations module
* added tests to the PromQueryModeller
* code review comments. Made range renderer common with code
* removed duplicate functions
* updated comments