rateLimiter.acquire(2); // R1.00, to repay previous
    rateLimiter.acquire(4); // R2.00, to repay previous
    rateLimiter.acquire(8); // R4.00, to repay previous
    rateLimiter.acquire(1); // R8.00, to repay previous
    assertEvents("R0.00", "R1.00", "R1.00", "R2.00", "R4.00", "R8.00");
  }

  public void testInfinity_bursty() {
    RateLimiter limiter = RateLimiter.create(Double.POSITIVE_INFINITY, stopwatch);

*   Improvements and fixes to Docker image.

# Release 0.7.0

## Major Features and Improvements

*   Allow using any installed Cuda >= 7.0 and cuDNN >= R2, and add support for
    cuDNN R4
*   Added a `contrib/` directory for unsupported or experimental features,
    including higher level `layers` module
*   Added an easy way to add and dynamically load user-defined ops