refactor(ts): enable noImplicitThis

[JustinBeckwith]

Fixes #312

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@6c74961). Click here to learn what that means.
The diff coverage is 100%.

@@           Coverage Diff            @@
##             master    #316   +/-   ##
========================================
  Coverage          ?   96.4%           
========================================
  Files             ?      13           
  Lines             ?    1058           
  Branches          ?     142           
========================================
  Hits              ?    1020           
  Misses            ?      32           
  Partials          ?       6

Impacted Files	Coverage Δ
src/index.ts	100% <100%> (ø)
src/snapshot.ts	100% <100%> (ø)
src/topic.ts	98.66% <100%> (ø)
src/subscription.ts	99.07% <100%> (ø)
src/iam.ts	100% <100%> (ø)
src/subscriber.ts	98.7% <100%> (ø)
src/histogram.ts	100% <100%> (ø)
src/publisher.ts	98.03% <100%> (ø)
src/connection-pool.ts	99.44% <100%> (ø)

---

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 6c74961...94b2b5f. Read the comment docs.