solaR 0.24
* The url of http://www.mapa.es/siar has been changed to
  http://www.marm.es/siar. The readMAPA function has
  been fixed. Moreover, this function has been renamed to
  readSIAR, although it is still available as readMAPA.
* The arguments prom, mapa, bd and
  bdI of calcG0, calcGef, prodGCPV
  and prodPVPS have been unified in the new
  dataRad. Those arguments are now deprecated although still available.
* The mode modeRad='mapa' is now deprecated and renamed
  to  modeRad='siar'.

solaR 0.23
==========
*A bug in fInclin when horizBright=FALSE has been corrected. See help(calcGef).
*Four sun-geometry methods are now available in fSolD, fSolI, calcSol.
*ThzS, AlS and AzS are not set to NA outside sunrise-sunset period (suggested by Joerg Trentmann)
*fInclin and calcGef gain a new argument, HCPV (suggested by Álvaro Segovia)
*A bug in fSolI and fTheta when lat=0 has been corrected (suggested by Alberto Soria)
*h2d and d2h small functions added.
*Small fix in fCompI.

solaR 0.22
==========
* The calculation of the sunset time has been improved.
* The voltage dependency of the efficiency curve of the inverter
  is now included in fProd and calcGCPV.
* The default values of the module, generator
  and inverter of both fProd, calcGCPV and
  optimShd are now documented.
* The help page of optimShd now explains correctly the concept of GRR.
* The plot method for Shade has been renamed to shadeplot.
* The as.data.frame method of the Shade class is
  now exported.
* The example included in the Target diagram help page
  now includes a graphic using the function horizonplot of latticeExtra.
* Several bugs have been corrected.

solaR 0.21
==========

solaR is now able to calculate from both daily and sub-daily irradiation values. These are the
most important changes:

* calcSol and fSolI gain a "BTi" argument for intradaily time bases.
* fCompI gains a "G0I" argument for intradaily irradiation series.
* fCompI gains both "corr" and "f" arguments.
* calcG0, calcGef, prodGCPV and prodPVPS gain a new "bdI" argument for intradaily irradiation, 
and the "corr", "f" arguments.
* The "bd" (and the new "bdI") argument of "calcG0" can be now a "Meteo" object. 
The "file" component of this argument can be now a "zoo" object.
* New methods ("losses", "compareLosses" and "compare") are available for "Gef" and "ProdGCPV" classes.
* The "corr" argument of "fCompD" (and "fCompI") can be now "corr=none".
* The correlations between the diffuse fraction and the clearness index are now 
coded outside "fCompD" as separate functions. 
Several new correlations have been included, both for monthly/daily values and for intradaily values.
* New small functions for difftime objects have been included.
* Small bugs have been fixed.
------------

solaR 0.20
==========

* The package is now almost entirely designed with S4 classes and methods.
* The time series object are constructed with the 'zoo' package.
* Most of the functions and arguments have been renamed in order to 
ease the understanding by international users.
* Two new functions have been included for the statistical analysis of a PV plant composed of several systems.
* The package dependencies have been optimized.
* Several new small functions for date-time calculations are now available.
* Several bugs have been corrected.