Dyon 0.8

New features:

• Infer range from loops
• Packed loops
• Secrets
• Current objects (using hidden dynamical scope)
• Ad-hoc types
• Link type
• Unpack and swizzle 4D vectors
• vec2/vec3/vec4 un-loops
• Closures
• Grab expressions
• Lazy || and &&
• Lots of bug fixes
• Better type inference