Update v1.0

I'm very cautiously calling it v1.0. I'm very much liking the current version... in my plays i don't see much else i'd like to change or add to it (other than the ones listed below). While it isn't really THAT much of a change from the previous version, i think i'm at a point where i'm happy to call it a complete version 1. For now. 

Rules changes and additions:

• Added an option to keep a temporary asset around -- essentially replaces one of your dice or die increases.
• Changed pushing a skill to allow a reroll of any die (from your or an ally's roll), instead of just its own die. It makes skills and gear more even-footed in utility during play. 
• Added tracks (~progress clocks) to the Extra Options section, because it's just a good versatile yet lightweight tool. I kept it as light on rules as possible to match the rest of the rules, leaving it mostly to the table to decide when to fill/clear tracks.

Minor wording/text changes:

• Added note to rest/recovery, that dangers and foes may progress. While it's a good pacing guideline for GMs, having it explicitly said in the rules section keeps the whole table in the headspace for fictional time-tracking. (Had to move "If killed, introduce a new character..." to the GM tips section, just for layout.)
• Removed examples in the risk levels (mostly harm to physical self or items), to encourage browsing the list of possible risk types. 
  
• Risk types: discovery --> scrutiny, resources --> depletion
• Vehicle/wheels in example gear types, replacing spell/technique.
• Clarified that increases for companion dice with XP are permanent.
• A couple more companion examples.