WebXR call agenda, Aug 7th 2018

*Call Agenda Items:*

   - Enable XRCoordinateSystem to support dynamic coordinate systems (#384
   <https://github.com/immersive-web/webxr/issues/384>)
   - Is XRDevice still necessary? (#385
   <https://github.com/immersive-web/webxr/issues/385>)
   - Normative requirements in security considerations section might be
   problematic (#386 <https://github.com/immersive-web/webxr/issues/386>)
   - Replace XRStageBoundsPoint with DOMPointReadOnly (#387
   <https://github.com/immersive-web/webxr/pull/387>)

Please reply with any additional items you'd like to see addressed.

*Call date:* Tuesday, Aug 7th (and every other Tuesday thereafter)
*Call time:* 1:00 PM PST for one hour

WebEx call details are posted to the internal-immersive-web@w3.org mailing
list, accessible to any community group member.

--Brandon Jones