Move class definitions to an Object

Allow next, prev, first and last to be overridden this way.
Bump version
Allow initialSlide to be set
Bump version
Set initial position properly if titles are hidden

Note that there's something weird going on with height animation
(doesn't seem to work at the moment).
Bump version
Remove redundant scripts
Update devDependencies
Set up beforeSlide hook
0.8.0
Rename at package.json
Remove private flag
0.8.1
Rename project
Bump version
Update index