fix(off): Allows no eventName
Merge pull request #90 from goinstant/colinmacdonald/off-fix

fix(off): Allows no eventName
chore(key guide): Adds a key and filter guide
Merge pull request #91 from goinstant/colinmacdonald/key-guide

chore(key guide): Adds a key and filter guide
v3.3.5
Merge pull request #93 from goinstant/release-v3.3.5

Release v3.3.5