v0.3.0, 10 Apr 2011 -- Initial Release
v0.3.4, May 2011  -- Added Clancy_Year to calculate a Mars calendar year
v0.3.5, July 2011 -- Corrected Clancy_Year to use the number of Earth days rather than Mars sols in a year
v0.3.6, August 2011 -- Added new Mars_Year calculation that uses Mars_Ls to iteratively find the year boundarys. Clancy year is inconsistent with Mars_Ls for very small values of Ls (~<0.01) from the year boundary.
v0.3.7, August 2011 -- Corrected math library only part of mars_year
v0.3.8, August 2011 -- Added nosetests for math vs numpy
v0.3.9, December 2011 -- Corrected bug in the mars_year calculation.
v0.4.0, June 2012 -- Added documentation directory
v0.4.1, August 2012 -- Rename to marstime
v0.4.2, August 2012 -- Removing 0.271 degree longitude addition. It correct MOLA to TES topo, not needed in general.
v0.4.3, September 2012 -- Updated to support Python3 (print statements only) + bug fix in mars_year_math version
v0.4.4 September 2012 -- removing .bak files form 2to3 conversion
v0.4.5 September 2012 -- ACTUALLY removing .bak files form 2to3 conversion
v0.4.6 October 2012 -- Adding some tests to increase coverage
v0.5.0 July 2019 -- Conda support
