- add helper to issue a notice and 'maybe' undo the last change
- add helper to issue a notice and 'maybe' undo the last change

justinfx/GoSublime,Mistobaan/GoSublime,DisposaBoy/GoSublime,dlclark/GoSublime,Mistobaan/GoSublime,allgeek/GoSublime,DisposaBoy/GoSublime,simman/GoSublime,alexmullins/GoSublime,anacrolix/GoSublime,nathany/GoSublime,allgeek/GoSublime,anacrolix/GoSublime,allgeek/GoSublime,nathany/GoSublime,DisposaBoy/GoSublime-next,alexmullins/GoSublime,simman/GoSublime,FWennerdahl/GoSublime,cdht/GoSublime,FWennerdahl/GoSublime,FWennerdahl/GoSublime,Mistobaan/GoSublime,DisposaBoy/GoSublime-next,alexmullins/GoSublime,DisposaBoy/GoSublime-next,simman/GoSublime,nathany/GoSublime,cdht/GoSublime,justinfx/GoSublime,dlclark/GoSublime,cdht/GoSublime,anacrolix/GoSublime