AA+ v1.57

Just to let everyone know that v1.57 of AA+ has been released. Updates for this version include:

• Renamed the method CAAEquinoxesAndSolstices::SpringEquinox to NorthwardEquinox to avoid the northern hemisphere bias in the name. Thanks to Marius Gleeson for prompting this update.
• Renamed the method CAAEquinoxesAndSolstices::AutumnEquinox to SouthwardEquinox to avoid the northern hemisphere bias in the name. Thanks to Marius Gleeson for prompting this update.
• Renamed the method CAAEquinoxesAndSolstices::SummerSolstice to NorthernSolstice to avoid the northern hemisphere bias in the name. Thanks to Marius Gleeson for prompting this update.
• Renamed the method CAAEquinoxesAndSolstices::WinterSolstice to SouthernSolstice to avoid the northern hemisphere bias in the name. Thanks to Marius Gleeson for prompting this update.
• The method CAAEquinoxesAndSolstices::LengthOfSpring now takes a boolean to indicate which hemisphere the observer is located in. Previously the code assumed a northern hemisphere bias. Thanks to Marius Gleeson for prompting this update.
• The method CAAEquinoxesAndSolstices::LengthOfSummer now takes a boolean to indicate which hemisphere the observer is located in. Previously the code assumed a northern hemisphere bias. Thanks to Marius Gleeson for prompting this update.
• The method CAAEquinoxesAndSolstices::LengthOfAutumn now takes a boolean to indicate which hemisphere the observer is located in. Previously the code assumed a northern hemisphere bias. Thanks to Marius Gleeson for prompting this update.
• The method CAAEquinoxesAndSolstices::LengthOfWinter now takes a boolean to indicate which hemisphere the observer is located in. Previously the code assumed a northern hemisphere bias. Thanks to Marius Gleeson for prompting this update.
• Updated the sample app to print out a table of information related to Equinoxes and Solstices.
• Addition of a CAADynamicalTime::TT2UTC method which converts from TT to UTC.
• Addition of a CAADynamicalTime::UTC2TT method which converts from UTC to TT.
• Addition of a CAADynamicalTime::TT2TAI method which converts from TT to TAI.
• Addition of a CAADynamicalTime::TAI2TT method which converts from TAI to TT.
• Addition of a CAADynamicalTime::TT2UT1 method which converts from TT to UT1.
• Addition of a CAADynamicalTime::UT12TT method which converts from UT1 to TT.
• Updated the observed DeltaT values from http://maia.usno.navy.mil/ser7/deltat.data to 1st September 2013.
• Addition of a CAADynamicalTime::UT1MinusUTC method which returns UT1 – UTC.
• Fixed a number of GCC compiler warnings in AATest.cpp.

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