v0.1.8

(pub): publish v0.1.8

backport v0.2.0 additions from 26cd1a54a0eec92a0cf7f39e1c235fb61971cae5
- add `pub` script (not `publish` as that's a keyword to run after publish)

- add lockfile

v0.2.1

(hotfix): `off` should only use `removeEventListener`

- typo / copy-paste error in last release accidentally changed it
  to `addEventListener`

- publish as v0.2.1

v0.2.0

(pub): publish v0.2.0

- minor bump due to new prop

- add `pub` script (not `publish` as that's a keyword to run after publish)

- add lockfile

v0.1.4

(pub): publish v0.1.4