Consolidate Niffler options into one line
Change i_<C-L> mapping to i_<C-J>, was incorrect
Remove gg mapping. Doesn't seem necessary or sane.
Add i_mappings for delete operations
Change CursorMoved to TextChanged in RedrawPrompt autocmd
Add CursorMovedI autocmd to keep the cursor after the prompt
Add InsertEnter autocmd to prevent insert mode outside of prompt-line
RedrawPrompt - remove line check, replace append w/setline