Dtscalibration

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* New resample_datastore method (see basic usage notebook)
* New notebook on basic usage of DataStore
* Support for Silixa v4 (Windows xp based system) and Silixa v6 (Windows 7) measurement files
* The representation string now includes the sections
* Reorganized the IO related files
* CI: Add appveyor to continuesly test on Windows platform
* Auto load Silixa files to memory option, if size is small

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* Rewritten the routine that reads Silixa measurement files
* dts-calibration is now citable
* Refractored the MC confidence interval routine
* MC confidence interval routine speed up, with full dask support
* Link to mybinder.org to try the example notebooks online
* Added a few missing dependencies
* The routine to read the Silixa files is completely refractored. Faster, smarter. Supports both the path to a directory and a list of file paths.
* Changed imports from dtscalibration to be relative

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* Single ended calibration
* Confidence intervals for single ended calibration
* Example notebooks have figures embedded
* Several bugs squashed
* Reorganized DataStore functions

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* Double ended calibration
* Confidence intervals for double ended calibration

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* First release on PyPI.