Added ability to log a specific tree trait using a different tag. XML looks like this (will log the second branch rates as 'trait.rate' whereas the first one will use its default 'rate'):
Added ability to log a specific tree trait using a different tag. XML looks like this (will log the second branch rates as 'trait.rate' whereas the first one will use its default 'rate'):

		<logTree id="treeFileLog" logEvery="1000" nexusFormat="true" fileName="untitled.trees" sortTranslationTable="true">
			<treeModel idref="treeModel"/>
			<posterior idref="posterior"/>

			<branchRates idref="branchRates"/>
			<trait name="rate" tag="trait.rate">
				<branchRates idref="trait.diffusionRates"/>
			</trait>
		</logTree>

4ment/beast-mcmc,beast-dev/beast-mcmc,codeaudit/beast-mcmc,beast-dev/beast-mcmc,4ment/beast-mcmc,beast-dev/beast-mcmc,4ment/beast-mcmc,maxbiostat/beast-mcmc,codeaudit/beast-mcmc,adamallo/beast-mcmc,maxbiostat/beast-mcmc,codeaudit/beast-mcmc,4ment/beast-mcmc,maxbiostat/beast-mcmc,maxbiostat/beast-mcmc,beast-dev/beast-mcmc,beast-dev/beast-mcmc,codeaudit/beast-mcmc,4ment/beast-mcmc,adamallo/beast-mcmc,maxbiostat/beast-mcmc,adamallo/beast-mcmc,beast-dev/beast-mcmc,adamallo/beast-mcmc,adamallo/beast-mcmc,maxbiostat/beast-mcmc,codeaudit/beast-mcmc,codeaudit/beast-mcmc,adamallo/beast-mcmc,4ment/beast-mcmc