TODO

build_EPSG3413_greenland.py
    rework interpolation of icebridge data... slow. May have to hand code linear interp
    encorporate more data to fill missing corners

bild_Bamber_greenland.py
    Remove CKTree as it's incredibly slow
    still need fields:
        lat
        lon
        landcover
        mask
        projection information
        CF-compliance

scrip_grid.py
    make entirely independent


build_*
    Remove redundant:
        add_time(), coarsen() in data/bamberdem.py and data/epsg3413.py can be combined and placed in util (they aren't grid specific).
    combine
    Fix:
        Conservative interpolation?
            RACMO
            bed?


All:
    fix all FIXMEs
    Python 2 and 3 compatibility
    clean up the python
    PEP8 conformance
    numpy vs as np
    use bar script from my process gist to make the status bars 
    complicated prints to "".format()
    parallelize
        move all base netCDF opperation to single module for parallelization

Document:
    All functions
    All files
    check all comments
    check all current documentation