Long dur specgram - fixes merge conflics, labels with wrong time, bug in building docs and uses warn not pring
Created by: areeda
Fixes #68 (closed) Failure in building documentation examles Fixes #67 The revert on previous pull Fixes #65 Merge conflict Fixes #63 (closed) Labels with wrong UTC time
All were minor changes Main issue is to choose between the two Spectrogram implementations.