Resolve some issues raised by `goodpractice`

DESCRIPTION

@@ -15,13 +15,14 @@ Description: A mathematical model of red blood cell (RBC) dynamics in a malaria
     infection, which includes the spleen as a separate model compartment that
     can retain large amounts of infected and uninfected RBCs.
 License: MIT + file LICENSE
+URL: https://gitlab.unimelb.edu.au/rgmoss/malaria-spleen-rbc-loss/
+BugReports: https://gitlab.unimelb.edu.au/rgmoss/malaria-spleen-rbc-loss/issues
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.1.2
 Imports:
     dplyr (>= 1.1),
     lhs,
-    readr,
     tidyr,
     VGAM
 Depends: