1.0.0-beta1: Merge 2 years worth of work from dev to master!
Highlights
* New plugin based architecture allows adding more features without bloating core src/impress.js file
* Source files are in src/ and compiled into js/impress.js with npm run build. End users should continue to use js/impress.js as before.
* 19 new plugins
* Integrates impressConsole.js by default (press 'P' to open speaker console)
* Markdown support for those that are too much in a hurry to type HTML
* 5 new demo presentations under examples/ show case the new features
* Removes the code that prevented impress.js from running on mobile phones