v0.4.0

• Rename d3.timerOnce to d3.timeout.
• Add d3.interval (#10).

v0.3.2

• Freeze time in the background, rather than periodically flushing the queue (#6).

v0.3.1

• Flush the queue every five seconds while in the background (#6).

v0.3.0

• Add d3.now.
• Remove the now argument to timer callbacks.
• Make timer scheduling consistent, even when a time is not specified.

v0.2.0

• Remove timer.id.
• Improve performance.

v0.1.2

• Add timerOnce.

v0.1.1

• Generate anonymous AMD.

v0.1.0

• Improve the README.

v0.0.6

• Define d3-timer module (and d3_timer global), not timer.

v0.0.5

• Adjust package.json definition for npm users.