v0.10
=====
A lot of interface-breaking changes here, including moving the short forms
from variables ($A_c) to constants (A_c) and changing long names from
adjective_noun to noun_adjective.  Values are being updated to reflect
the ones found at nist.gov.
The data files are being moved to xml files and broken up by category.

If there is a deep desire for read-only variables, I will write a new
module that uses Lexical::Import.

List of name changes
====================
For compatibilities sake, I should create all the
old long names as aliases, so that you can use both
and warn of the breaking change in the documentation.
Import them all as :old

LIGHT_SPEED			SPEED_LIGHT
ELECTRON_CHARGE 	CHARGE_ELEMENTARY
A_RAD				DENSITY_RADIATION
VACUUM_IMPEDANCE	IMPEDANCE_VACUUM

PERMITIV_FREE_SPACE	PERMITIVITY_0
PERMEABL_FREE_SPACE	PERMEABILITY_0

HBAR				H_BAR
ELECTRON_MASS		MASS_ELECTRON
PROTON_MASS			MASS_PROTON
NEUTRON_MASS		MASS_NEUTRON
HYDROGEN_MASS		MASS_HYDROGEN
SOLAR_MASS			MASS_SOLAR
SOLAR_RADIUS		RADIUS_SOLAR
SOLAR_LUMINOSITY	LUMINOSITY_SOLAR
EARTH_MASS			MASS_EARTH
EARTH_RADIUS		RADIUS_EARTH
RHO_C				DENSITY_CRITICAL_RHOc
EARTH_MASS			MASS_EARTH
EARTH_RADIUS		RADIUS_EARTH
THOMSON_XSECTION	THOMSON_CROSS_SECTION
ELECTRON_RADIUS		RADIUS_ELECTRON
BOHR_RADIUS			RADIUS_BOHR
SOLAR_TEMPERATURE	TEMPERATURE_SOLAR_SURFACE
CMB_TEMPERATURE		TEMPERATURE_CMB
SOLAR_DENSITY		DENSITY_SOLAR
EARTH_DENSITY		DENSITY_EARTH
SOLAR_GRAVITY		GRAVITY_SOLAR
EARTH_GRAVITY		GRAVITY_EARTH
SOLAR_V_MAG			MAGNITUDE_SOLAR_V				done
SOLAR_V_ABS_MAG		MAGNITUDE_SOLAR_V_ABSOLUTE
LUNAR_RADIUS		RADIUS_LUNAR
LUNAR_MASS			MASS_LUNAR
LUNAR_SM_AXIS		AXIS_SM_LUNAR
LUNAR_ECCENTRICITY	ECCENTRICITY_LUNAR

add in new definitions to <cat>conversion
YEAR_TROPICAL			365.242 190		Astronomical Almanac 1993 (update)
YEAR_SIDEREAL			365.256 363		Astronomical Almanac 1993 (update)
YEAR_ANOMALISTIC		365.259 635		Astronomical Almanac 1993 (update)
YEAR_ECLIPSE			346.620 073		Astronomical Almanac 1993 (update)

Candidates for removal
======================

HUBBLE_TIME - this constant is inherited from Jeremy Bailin's Astroconst.
	It is the inverse of the Hubble constant, valued at 100 km/s/Mpc and
	is not constant.  Suggest moving it into Astro::Cosmology

Introduced
==========
MASS_ALPHA
