Navigate through tabs in SublimeText using super (cmd/ctrl) + left / right arrow keys. This overrides the original behavior of jumping to the beginning or end to the line. An alternative is to use the built in ctrl + a to jump to the beginning of the line and ctrl + z to jump to the end of the line.

gistfile1.txt

[
	{ "keys": ["super+right"], "command": "next_view" },
	{ "keys": ["super+left"], "command": "prev_view" },
	{ "keys": ["ctrl+z"], "command": "move_to", "args": {"to":"hardeol", "extend":false}}
]