adding support for stacklead with tests
add support for delivery method
add duplicate suppression flag
Release 1.1.7
duplicates default to false
Merge pull request #53 from tedjt/stacklead

add support for delivery method in stacklead
stacklead: formatting
Merge branch 'stacklead'
Release 1.1.8
customer.io: adding fix for dates + ocd

Converts all Customer.io traits and properties which are dates into
unix timestamps
Release 1.1.9
vero: enable only for messages with userId
Merge pull request #57 from segmentio/fix/vero

vero: enable only for messages with userId
Release 1.1.10
updating gitignore
add churnbee
vero: add .alias()
webhooks: lowering timeout and retries

Lowering timeouts and retries for bad webhooks so that we don't get
really long timeouts.
Merge pull request #60 from segmentio/lower/webhooks

webhooks: lowering timeout and retries
Release 1.1.11