fix #88 and many others with Failed to handshake (#89)

* fix #77 and many oithers with Failed to handshake
* Fix #88 fix not used arguments test failture
* Bump version to 3.1.8. Updated changelog.

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Co-authored-by: João Duarte <jsvd@users.noreply.github.com>

Fix "wrong number of arguments" error when shipping events to MongoDB (…

…fixes #60, #64, #65) (#66)

Add missing second argument to to_bson methods, introduced with underlying Mongo driver update (fixes issues #60, #64, #65)

bump to version 3.1.6

bump version to 3.1.5

set default_codec doc attribute

[skip ci] update gemspec summary

version bump for some docs fixes

bump patch level for doc generation

Update CHANGELOG.md

Remove comments causing docgen issues and make a few edits

Fixes #37