Merges branch 'release/0.1.9' into develop
Fixes <SID> not in script context error.

For Vim 7.3, mappings with 's:' aren't auto expanded in <SNR>.
This fix switches Delegates to expanded form with <SID>
instead of `s:`.

TODO: Indentify Vim patch number that started auto-expansion.
Changes delegate to used cached SID.

This is a better fix for the <SID> bug. Uses the SID
function. More robust and improves performance of delegates.
Bumps version to 0.1.10
Build 0.1.10
Merges branch 'release/0.1.10'