Release 1.2.1 (2016-07-22)
Query endtimes are now treated as Exclusive rather than inclusive.
Release 1.2.0 (2016-06-28)
Internal Changes to reduce the memory footprint.
The service was occasionally running out of memory and failing as a result.
Also, reduced the number of PSDs that can be retrieved in one request from
10,000 to 6,000.
Release 1.1.1 (2016-04-21)
Now remove NaN power values prior to plotting.
Updated internal pdf API