Convert observer options to bit field

[realityforge]

No description provided.

[codecov-io]

Codecov Report

Merging #25 into master will decrease coverage by 0.23%.
The diff coverage is 87.47%.

@@             Coverage Diff             @@
##             master     #25      +/-   ##
===========================================
- Coverage     91.03%   90.8%   -0.24%     
- Complexity     3025    3037      +12     
===========================================
  Files            92      90       -2     
  Lines          7238    7219      -19     
  Branches       1179    1181       +2     
===========================================
- Hits           6589    6555      -34     
- Misses          111     119       +8     
- Partials        538     545       +7

Impacted Files	Coverage Δ	Complexity Δ
.../main/java/arez/processor/ComponentDescriptor.java	96.57% <ø> (ø)	625 <0> (ø)	⬇️
core/src/main/java/arez/Node.java	83.33% <ø> (+4.16%)	24 <0> (+1)	⬆️
...e/src/main/java/arez/spy/ObserverCreatedEvent.java	100% <100%> (ø)	3 <1> (-1)	⬇️
core/src/main/java/arez/Component.java	82.4% <100%> (ø)	65 <0> (ø)	⬇️
...re/src/main/java/arez/spy/ComputeStartedEvent.java	100% <100%> (ø)	3 <1> (-1)	⬇️
core/src/main/java/arez/SpyImpl.java	88.46% <100%> (+6.31%)	36 <3> (-55)	⬇️
...ain/java/arez/spy/ObservableValueChangedEvent.java	90.9% <100%> (-0.76%)	4 <1> (-1)
...in/java/arez/spy/ObservableValueDisposedEvent.java	100% <100%> (ø)	3 <1> (-1)	⬇️
.../main/java/arez/spy/ComputedValueCreatedEvent.java	100% <100%> (ø)	3 <1> (-1)	⬇️
...ore/src/main/java/arez/spy/ActionStartedEvent.java	100% <100%> (ø)	5 <1> (-1)	⬇️
... and 41 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e6bcb01...ee8af62. Read the comment docs.