Update paleopizometry_template.ipynb

Update .gitignore

update notebooks

issue #15, bug in Van der Wal piezometer

update fig links

Update Scope.md

correct bug in paleopiezometer

- Van de Wal piezometer correction

bug correction in plots

- histogram bin size return was incorrect
- now recalculates the number of bins to approximate the desired binsize

ready for v3.0beta1

update to v2.0.3

- Add new functions 'test_lognorm' and 'qq_plot' to test lognormality
- Bug correction (issue#13)
- Now the maximum precision of the kde estimator can be declared
- Incremental improvements in the code (Including some reorganization)
- Incremental improvements in the plots
- Requiremets list updated