refactor: consume htm from npm instead of an inlined minified copy - #66

Changed pages include:

• index.html - view
• examples/attribute-converters/index.html - view
• examples/attribute-lifecycle/index.html - view
• examples/boolean-props/index.html - view
• examples/constructed-styles/index.html - view
• examples/demo/index.html - view
• examples/just-parts/index.html - view
• examples/lifecycle-order/index.html - view
• examples/nested-composition/index.html - view
• examples/on-changes/index.html - view

There are more changes not included in the list