v0.20.19

MPI v0.20.19

Diff since v0.20.18

Merged pull requests:

• Add Libdl compat for MPIPreferences (#795) (@giordano)
• Update TagBot.yml (#797) (@vchuravy)
• add c2f/f2c handle conversions (#798) (@simonbyrne)
• AMDGPU compat (#803) (@luraess)
• fix typos (#805) (@spaette)
• More typos (#806) (@simonbyrne)

Closed issues:

• typos (#804)