Added transformations to the notebook

* Added to ipf from dataframe. Also updated both gpf and ipf writer tests

* Added test output file.

* Added asserts to gpf and ipf tests

* Reverted save_gpf testing to numpy array almost equals

Small change to update file column in dataframe.

Ipf Reader

Added bin and notebooks directories, also added Socetnet2ISIS script

* Makes gdal an optional dependency

* Refactors all bae I/O into a single namespace.

* typos

* Fixes the gdal dependency test

* Adds tests for the JSON

* Tests fail without test data

* Updates for comments from @thareUSGS

* Adds ISIS3 V2 ControlNetwork Reader

* Adds hcube mixin object

* Updates to support tif M3, and fixes indexing issues

* Makes gdal an optional dependency

* Refactors all bae I/O into a single namespace.

* typos

* Fixes the gdal dependency test

* Adds tests for the JSON

* Tests fail without test data

* Updates for comments from @thareUSGS

* Adds ISIS3 V2 ControlNetwork Reader

* Adds hcube mixin object

* Added Socet Set GPF/IPF examples

* Added .prj and .sup examples that correspond to .ipf and .gpf Athabasca examples

* Add .atf example

* Removed erroneously-added .gpf files from SocetSet examples

good additions.

* Makes gdal an optional dependency

* Refactors all bae I/O into a single namespace.

* typos

* Fixes the gdal dependency test

* Adds tests for the JSON

* Tests fail without test data

* Updates for comments from @thareUSGS

* Adds ISIS3 V2 ControlNetwork Reader

These Eigen values only get written into the gpf only after the user saves the triangulation after running a solve.

Socet GXP gpf and ipf examples

Several lines have been added to GXP gpf file.

* Typo fixes in io_gpf.py. Column labels now match case of headers in Socet Set spec for GPF files.

* More typo fixes for GPF column labels in IO script and test data