I've just noticed this one and have solved the first two, so thought I'd post the solution. Put the following in your Preferences | Key Bindings - User:
Customer support service by UserEcho
I've just noticed this one and have solved the first two, so thought I'd post the solution. Put the following in your Preferences | Key Bindings - User:
{ "keys": ["ctrl+shift+d"], "command": "duplicate_line" },