Update version number

Update bower due to new folder structure

Implement a on-start and on-end callback as requested in angular-slid…

…er#121 and angular-slider#86.

Truly fix angular-slider#106. rz-slider-on-change fires before value …

…is changed

Fixes angular-slider#106 (rz-slider-on-change fires before value is c…

…hanged)

Fix memory leaks that was brought by the clickOnBar feature.

Fixes angular-slider#93. It was because the scope was not applied whe…

…n the 2 values were the same.

Set version to 0.1.22

Fix angular-slider#63

Fix angular-slider#62