*** List of changes since last release (1.36), some of which need to be added to the 
changelog ***

- simplify centered seasonals creation in determ()
- catch the case when no restrictions are given, to prevent other errors
- catch a missing cointegration setup when trying to estimate a SVEC
- add a linear dependency check on the exogenous terms in SVAR_setup
- allow omission of jalpha in SVAR_coint
- (internal: replace isnull with !exists, and vice versa)
- fix indexing error and mis-concatenation in vecm_est
- fix companion matrix in vecm_est with exogenous
- catch the case where restrictions would not work (imp2exp) and print out a message

- New argument 'checkident' in SVAR_setup. Checking identification is default 
  in script use (SVAR_setup). Some warning messages regarding the non-stable state of
  the id check code.
- A new restriction check in the SVEC case (Luetkepohl 2008).
- fix (hopefully) the treatment of deterministics and exog. in the SVEC bootstrap


---- changelog in SVAR.tex updated up to here -----

- add optional rexo list arg to SVAR_coint, to allow -in the future- restricted exog. vars

