New options: R_clear_console, R_debug, R_auto_start, R_dbg_jump.
Replace options R_in_buffer, R_term and R_term_cmd with a single option: R_external_term.
Make R_rmdchunk more flexible.
Change default key binding for calling debug() from \db to \bg to avoid conflict with \d (send line).
Require either Neovim >= 0.4.3 or Vim >= 8.1.1705.
I'm no longer releasing a Vimball. If you have installed a Vimball, you have to uninstall it before installing the plugin as a Vim package. But it will be even better to use the stable branch from the github repository because I'm not going to release a new version due to minor bugs eventually found in the released version.