Hugo Modules

• Update to latest Slate.
• Redone the setup to use Hugo Modules, and Hugo Pipes for assets handling and bundling.

Note that you need Hugo >= 0.56 to run v.1.2.0.

v1.1

This release add some more hooks for custom side bars:

• partials/hook_left_sidebar_start.html the start of the left sidebar
• partials/hook_left_sidebar_end.html the end of the left sidebar
• partials/hook_left_sidebar_logo.html contains the img source