Merge branch 'master' of https://github.com/nansencenter/nansat
Fixed wrong reference to calibration constant in ASAR mapper
Nansat 0.5
Merge branch 'develop'
#71: create export2thredds in Nansat.
Merge branch 'develop' of https://github.com/nansencenter/nansat into issue71
#71: if get_time() in Nansat.export2threds() is None, delete from the list.
#issue71: replace 'FillValue' to '_FillValue' in Nansat.export2thredds()
added asar doppler mapper and updated nansat.py to sort the mapper list so that a default is always selected when several mappers can handle the same data
#71 Modify ncep mapper. ncep files bofore Jun.2008 are possible to read.
made package directory nansat under project directory nansat in order to follow the packaging conventions
moved setting of env variables to __init__.py instead of nansat.py, and corrected small error when sorting mapperList
added tests and corrected bugs found in several mappers
changed to import .nansat_tools in __init__.py
Use extension module for compiling pixel functions
minor update of mapper_globcolour_l3m
#71 fix few things in Nansat.export2thredds
Merge branch 'issue71' of github.com:nansencenter/nansat into issue71
#72: Merge with neothemachine. Extend setup.py for CL compiler(windows).
Merge branch 'develop' into issue71