0.2.1 2014/07/22 ABI 2.1
	* ABI is backward compatible with 0.2.0.
	* Support for the special values DBL_MAX, DBL_MIN, -DBL_MAX
          and -DBL_MIN is any scalar floating-point value in XML i/o.
          This avoids loss of precission or SGFPE when
          saving/restoring certain default value in XML files.
	* Bug fix: avoid buffer overflow in Factory.

0.2.0 2014/07/21 ABI 2
	* New integrators, require Boost >= 1.93 and C++11. The new
	  integrators live in Worldline::IntegState, not in the Metric. Read
	  the user guide for more details, as well as the doxygen
	  documentation for the Scenery class.
	* New Metrics: Minkowski, NumericalMetricLorene
	* New Astrobjs: DirectionalDisk, StarTrace, ThinDiskIronLine
	* Give access to some numerical parameters of the RK4 integrator
	* Include LaTeX user guide
	* Yorick plug-in API change: the dot operator has changed its meaning.
	  Codes that used it may require updating. Examples:
	    m = gg.mass -> m =gg.mass()
	    obj=gg.clone -> obj=gg.clone()
	    scenery.screen(resolution=128) -> screnery.screen.resolution(128)
	    scenery.astrobj(initcoord=x,v) -> scenery.astrobj()(initcoord=x,v)
	* Rename methods from from setMass()/getMass() style to mass()/mass()
	  style. Macro with the old names are provided in GyotoDefs.h,
	  triggering a deprecation warning. Code may break nevertheless,
	  typically in two cases:
	    + if the new name was used as a variable name in your code:
	      please change the variable name;
	    + if your derived class overloaded only one of the two accessors
	      (e.g. only setMetric, not getMetric): in this example add
	        using Generic::metric;
	      in your derived class definition.
	  To get rid of the deprecation warning, define the GYOTO_NO_DEPRECATED
	  macro, for instance "make CPPFLAGS=-DGYOTO_NO_DEPRECATED"
	* Serious bug fixes and improvements in PolishDoughnut
	* Replaced Disk3D_BB with DynamicalDisk3D
	* Disk3D now has an opacity
	* Make KerrKS work (using the generic integrator only)
	* New interface: work in progress (WIP), to mark classes that are known
	  to be broken. Instanciating such a class yields a warning.
	* Update build systems to current autotools
        * Implement mask in screen to compute only parts of an image
	* Improve behaviour for emitter or observer far from massive object

0.1.0 2013/07/27 ABI 1
	* add units system
	* add PolishDoughnut astrobj
	* use pkg-config
	* gyotoy ported to yorick-gy instead of python
	* in Worldline, Photon and Scenery: rename tlim to tmin, default
	  value is -DBL_MAX.
	* add a mutli-wavelength flavour of Astrobj::emission()
	* install yorick plug-in under ${prefix}, not necessarily in Y_HOME
	* add plugin attribute to the Metric, Astrobj and Spectrum entities
	* reform build system to use the autotools
	* add --plugins command-line option
	* add virtual destrcuctor to Spectrum::Generic
	* fix buffer overflow in lib/Factory.C
	* update paper ref in bin/gyoto.C

0.0.3 2012/05/01 BUG
	* fix a tiny bug in PatternDisk (initialization of phimin/max)
	* rearrange flags in Makefiles/local_settings
	  for easier downstream packaging

0.0.2 2012/04/19 PKG
	* install include files in include/Gyoto
	* add this ChangeLog

0.0.1 2012/04/16 ABI 0
	* release
