Log Message:
sysutils/xplr: update to 0.17.0

Changes & fixes
-Deprecated app.directory_buffer, app.history, and app.last_modes in
 the custom dynamic layout renderer context.
 As of now, there's no way to access these fields in dynamic layouts. While
 app.history and app.last_modes can be re-added upon request
 (with justification), app.directory_buffer has been deprecated for good.
 However, there's no change in the CallLua* context.
-As a result, change directory performance has been restored.
-Set xplr.config.general.hide_remaps_in_help_menu to true to hide the remaps in
 help menu.
-None will be serialized to nil in Lua.
-LuaEval can now return a function that will be called with the Lua Context
 argument. Refer to the Full List of Messages doc for example.