Bump versions, fix css paths

See PR #111
for details

Better user experience.

• When a link is clicked in the header nav bar, the page is no longer refreshed, only the page-content is updated so the user doesn't have to reload everything
• Another small change but very significant and has a high impact in user experience is that, for each page upon loading, a default figure is rendered. Before this, we had to wait for the callback to fire before rendering the default graph, and for each page callback we have to check it a currently rendered graph exists. This is no longer the case, the user experience is significantly improved.
• Massive modifications in code style and naming conventions

More polished kinematics algorithm.

For solving hexapod orientation for kinematics page:

• Prefer stable poses where the legs are not adjacent to each other
• Introduce some randomness so we are not bias in choosing on stable position over another

Dark Mode!

• Add Dark Mode as default page style
• Improve UI
• Make some settings customizable
• Improve code quality
• Add a few tests
• Fix a few bugs

First pre-release!

This release has all the kinematics and inverse kinematics functions however, the app has not yet been thoroughly tested yet.