v0.18.0 - Zooming Zokor

Notable changes

• added zoom - via '+'/'-' or the [S]ettings
• added 'Cardboard', 'Dark', 'Leather', 'Paper', 'Sand' and 'Space' backgrounds
• added markdown support to notes, increased max. length to 256
• added default token backsides (again)

Other changes

• added plain token
• added a bcrypt tool for easier setup at URL /tools
• unified wording 'template'/'snapshot' to 'snapshot' only
• fixed LOS selected
• fixed wrong cursor on notes in measure mode
• fixed asset filenames
• fixed wrong color names in autoconverted snapshots
• fixed spinner button text
• fixed drag cursor sometimes sticks
• fixed sync stops when modal is open too long
• improved library previews
• improved grids
• improved background image quality
• improved duplicate asset handling
• improved monospace typography
• removed raw HTML support in notes