v0.55-beta

Release date: 2018-03-30
Main changes:

• Repository is created
• Demo version is moved from bl.ocks.org to azgaar.github.io
• Default map resolution is set to full-screen
• 'About' tab in Options with project description and links
• 'Share' buttons in 'About' tab
• 'The version is obsolete' message to display on gist version