Double and triple clicking to the left of a paragraph first character shouldn't select the previous word or paragraph

[davidbalbert]

To reproduce:

1. Move your mouse into the gutter before the first character in a paragraph
2. Double or triple click

Expected result: on double click, the first word of the paragraph is selected. On triple click, that paragraph is selected.

Actual result: on double click, the preceding newline is selected. On triple click, the preceding paragraph is selected.