fix gui
implement display types for surroundings and advanced resampling mode
change font-family of info button to serif
four sided border of popup div
fix gui (follow up dc40e57)
add progress update
do not check export attributes option by default
initialize symbol rendering before vector output. fix for 2.3 changes
set overflow property of popup div to auto
fix error of queried position (ie)
add ability to toggle visibility of labels
JSON model: add rotation (x) option
JSON model: check JSON file exists
JSON model: add label "this type is experimental"
check validity of values (World page)
update README.md. add CONTRIBUTOR.md. update control help
v0.7 release
add javascript libraries: JSZip and FileSaver.js
add STLExporter.js (three.js, dc4dc23)
new template: STLExport.html