API rate limiting enhancements

Due to various feedback we’ve made some minor changes in regards to the API rate limiting.

Rate limiting is reset at midnight UTC (for consistency) and the response header can be viewed for the following data:

X-RateLimit-Limit – The limit that you cannot surpass in a given amount of time
X-RateLimit-Remaining – The number of calls you have available until a given reset time stamp, or calculated given some sort of sliding time window.
X-RateLimit-Reset – The timestamp in UTC formatted to HTTP spec per RFC 1123 for when the limits will be reset.

Example of response header data:

x-ratelimit-limit →1700
x-ratelimit-remaining →4
x-ratelimit-reset →2018-03-13T00:00:00Z