package can't be installed

[dholstius]

Summary

• Package assertive has been removed from CRAN
• Package rdrop2 has also been removed from CRAN, although it still exists on GitHub
• Because of this, packages that depend on rdrop2 can't be installed automatically (with, e.g., devtools::install_github("BAAQMD/droptools") or pak::pak("BAAQMD/droptools"); installation will fail
• This package depends on BAAQMD/droptools

[dholstius]

Fixed by BAAQMD/droptools@aac5ee0