https://github.com/openfl/openfl/wiki/Get-Started
haxelib install format
haxelib install swf
haxelib install svg
git clone https://github.com/openfl/openfl-tools
haxelib dev openfl-tools openfl-tools
To rebuild the tools, use:
openfl rebuild tools
To return to a release build:
haxelib dev openfl-tools