* attempts to add `div` math operator
* allows `//` to be used too
* fmt:
* clippy issue
* returns appropriate type
* returns appropriate type 2
* fmt
* ensure consistency; rename to `fdiv`
* Update parser.rs
* dabase access commands
* select expression
* select using expressions
* cargo fmt
* alias for database
* database where command
* expression operations
* and and or operators
* limit and sort by commands
