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Channelflow-0.9.13,  Wed May 25 12:05:29 EDT 2005

Main changes:
Regularized use of modenumber mx and wavenumber kx in FlowField.
Added many FlowField differential operators in new file diffops.{h,cpp}.
Moved Navier-Stokes nonlinearity calcs from FlowField methods to diffop funcs,
  revised NSIntegrator to use new functions in diffops.{h,cpp}.
Added PoissonSolver and PressureSolver classes.
Extensive additions to channelflow.tex documentation, mainly to clarify 
  regularization of mx,mz vs kx,kz, and match new calcs of NL terms.

Smaller changes:
Changed FlowField::profile functions to index on mode numbers (mx,mz).
Regularized divNorms and bcNorms: same syntax as L2Norm.
Added swap functions for Vector, ChebyCoeff, ComplexChebyCoeff.
Added diff(Chebyshev, n), diff(ComplexChebyshev, n) functions.
United various FlowField slice and crossSection methods into one slice func.
Changed recursive pow(int, int) into log N while-loop.

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Channelflow-0.9.12,  Wed Mar 16 13:09:37 EST 2005

Changed vector.{h,cpp} to cfvector.{h,cpp} to avoid nameclash w gcc-3.3.
Modified FlowField binary IO to only save nonaliased modes when appropriate.
Changed method names in TurbStats to reduce confusion of U Umean, utot, etc.

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Channelflow-0.9.11,  Wed Apr 21 15:19:42 EDT 2004

Removed orrsommfunc.{cpp,h}. These won't compile without Octave.
Fixed a bug in Chebyshev::makeState(fieldstate s) that called 
  ichebyfft instead of chebyfft in some cases. 
Added kxMaxDealiased (and kz) functions to NSIntegrator.

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Channelflow-0.9.10,  Sat 01/31/04 at 21:34

Bugfix in NSIntegrator. Fixed a serious bug in NSIntegrator that had
  turned off tau correction in the time-stepping algorithm. I introduced
  the bug while converting from integer flags to the DNSFlags class in
  0.9.8.
 
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Channelflow-0.9.9,  Mon Dec  1 12:13:21 EST 2003

Fixed bug in FlowField::nonlineritySkewSymmetric().
Added FlowField::nonlinerityConvection()
Added FlowField::nonlinerityDivergence()
Added Alternating convection/divergence option in DNSFLags and NSIntegrator.
Moved CFL calculation from nonlinearity methods to a function call 
  outside largest loop in NSIntegrator::advance. No need to make inner-loop
  CFL calc, plus it was inconvenient within some nonlinearity methods.
Revised manual to reflect added nonlinearity method.
  

