Dev

[alxpez]

• chore(github) include contributions guidelines & templates (bug,feat,PR)
• fix(#19): html builder to properly close void-elements (img, input)
• feat(#17): include installation gotchas on readme
• chore(package): update VMA to latest version (0.15.3)
  • feat(MaterialComponents): update MDC definitions to new VMA version
  • fix(styles): styles refactor and minor tweaks due to VMA version update

... plus other minor changes