fixes (#3)

* chore: update copyright year (ChrisTitusTech#988)

* refact: minor fixes (ChrisTitusTech#971)

* Fix unused float handle mouse function, pub mod appstate

Fix unnecessary usage of pub mod for appstate and resolve unused float handle mouse function

* Resolve clippy warnings

Remove explicit lifetime for floatcontent impl. Use div_ceil instead of manually calculating the rows for hints

---------

Co-authored-by: Adam Perkowski <[email protected]>
Co-authored-by: Jeevitha Kannan K S <[email protected]>