[Fix] Corrected pause/resume behaviour and upgraded bach-js

Changes

:clock1: Fixed pause/resume functionality in default timer by accounting for skew in resume (somehow missed this originally, derp)
:pager: Added update:status event to Gig.is method to bridge imperative and declarative solutions
:wrench: Added based and pristine status getters for easier high-level state management (particularly for reactive systems and controllers)
:package: Upgraded bach-js to v3.0.0-beta.8 (now using segu package for units).
:shipit: Version v3.0.0-beta.7

slurmulon / gig