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  dynDates; dynDate can be initialized with a single dynDate

Following syntax:

ts{'GDP_US'} = ts.{'GDP_US'}.log

applies the log function to the variable GDP_US in the dynSeries object ts. Note that this works on an arbitrary number of variables and that regular expressions can be used (see previous commits).

The following syntax

A.name{i}

where A is a dynSeries object, returns the name of the i-th variable in A.

Added the possibility to select variables in a dynSeries object. It is possible to use regular expressions.  Examples are given in unitary test #6 of subsref overloaded method.

For instance, the following syntax is allowed:

dbload = dynSeries();
mydata = dbload('data_file.csv');

For instance, the follwing syntax is allowed:

data = dynSeries('mydata.csv');

assuming that the csv file is in the matlab's path.

Moved isweekly, ismonthly, isquaterly and isyearly routines from matlab/@dynSeries/private to matlab/utilities/dates. Adapted dynare_config conformably to these changes.