Remove leading spaces in template

scrape some extra bytes minification
unbind events only if current_element exists. Resolves #3.
Fetch selected value only once per suggestion cycle. Resolves #4

To avoid inconsistencies between the various debounced events we fgetch the value once when setting the selected index and caring it throughout the rest of the suggestion cycle.
Added HISTORY.md
bower: Added angular dependency
incrementing version to 0.2