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0.9.8
 * gradient functions work better with fixed parameters, hence with profiling
 * profile plot reverts to linear for non-monotonic profile
 * added warning in confint for non-monotonic profile; revert
    from spline+linear to linear approximation in this case
 * documentation improvements
 * optimx improvements
 * require data= argument when using formula interface
 * turn off hessian computation in profile
 * allow use of MASS::ginv

0.9.7
 * bug fix in calc_mle2_function for no-intercept models
  (thanks to Colin Kremer)
 * fixed optimx, added 'user' option

0.9.6
 * changed hessian calculation to use numDeriv code (causes tiny
changes to hessian results that could matter in edge cases)
  too lazy to provide a backward compatibility mode ...
 * documented optimizer= choices in ?mle2

0.9.5.1
 * fixed bug in AICc (David Harris)


0.9.5 

  too many changes!
 * added NAMESPACE, various fixes to go with that
 * beginnings of an RUnit testing framework
 * tweaked vignette
 * added prof.lower, prof.upper to profile()
 * added "optimize" to list of allowed optimizers, some
   bug fixes

0.9.4.1

 * tweaked par() resetting in profile plots

0.9.4

 * more qAICc fixing

0.9.3 (version bump from previous) 18/09/2009

* tweaked handling of bounds: profile now succeeds
  on some 1D problems where it didn't before

15/08/2009

* added deviance, residuals methods
* added newparams argument to predict, simulate;
   newdata argument to simulate
* added vignette (stub)
* added explicit params argument, to help sort out
  full parameter specifications when parameters is
  non-NULL

0.9.2 10/08/2009
* fixed predict() for case with parameters
* added snorm
* changed ICtab defaults to weight=TRUE, base=FALSE, sort=TRUE

0.9.1 
  added simulate method (formula interface only)
  fix AICctab bug
  remove spurious cat/print in profile
  fix qAIC bug

0.9.0 26/08/2008
*  fix Tom Hobbs bug: named lower/upper/parscale/ndeps
get rearranged properly, otherwise rearrange in order
of "start" and issue a warning
* documentation tweak for S4 as.data.frame
* added sbeta to list of known distributions
* removed nlme requirement & auto-loading

0.8.9 04/08/2008
* version bump, submit to CRAN
* added predict method

0.8.8  10/07/2008
* added flexibility for profile plotting (main, x labels etc.);
    added examples
* added an instance of "namedrop" to fix naming problem
* added tol.newmin to slice etc.
* added check for numeric return from profile within confint
* fixed bugs in profile plotting when profile is restricted
   to a subset of variables
* added tests for par() to reset to original on exit
* improved profile documentation
* replicate std.err if specified in profile
* add as.data.frame 
* tweak tol.newmin (better fit found during profile) code

0.8.7  12/05/2008
* version bump, moved to R-forge.
* reordered NEWS file (most recent first)
     
0.8.6.1 22/03/2008:
   tweaked stop-on-better-fit code
   fixed (?) qAIC(c) methods

   26/03/2008:
   tweak/fix to ICtab documentation (thanks to Tom Hobbs)

0.8.6 added qAIC(c) methods (not working yet!)

0.8.5.1 oops. Fixed infelicity (bug?) in new 
  environment manipulation

0.8.5 tweaked environment/data assignment to preserve
    original minuslogl environment better

0.8.4 changed  plot.profile.mle2 options (added onepage etc.,
   made plot.confstr=TRUE by default)

0.8.3 added warning about too-short lower/upper 
      added documentation

0.8.2 fixed bug in AICctab
      cosmetic change to printing -- save call.orig
      moved ChangeLog to NEWS

0.8.1 fixed (?) environment bug
      tried to use built-in relist, but failed: renamed relist
	  to "relist2" (try again later)
      documented get.mnames (auxiliary function for ICtabs)
      started to add gr (gradient) capability -- NOT TESTED

0.8  changed ICtab to allow either ICtab(x,y,z) or ICtab(list(x,y,z))
	  (L <- list(...); if is.list(L[[1]]) && length(L)==1)

0.7.7 fix bug in profiling: all optim() methods EXCEPT L-BFGS-B
     return the value of the objective function if given a function
     with no arguments/zero-length starting parameter vector
     (this is the situation with "profiling" a 1-D function).
     L-BFGS-B gives funky answers.  added a check for this case.
     (may need to check behavior for alternate optimizers (nlm etc))
    [this behavior triggered a "found better fit" error when profiling
     1D functions with L-BFGS-B]

     changed behavior when finding better fit during profiling
     to return new parameters


0.7.6 tweak vignette
    fixed second major AICc bug (was fixed in mle2 method,
	 but not in logLik method)

0.7.5 change "ll" to "LL" in examples for clarity
    tweaked anova reporting of models (wrap instead of truncating)
    added (undocumented) show.points option to profile plot
	to display actual locations of profile evaluation
    tweaked profile to behave better when profiling variables
	with constraints (upper, lower)
    moved vignette to inst/doc where it belongs
    ICtab hack to protect against package:aod definition of AIC(logLik)
    added submit stub
    tweaked slice.mle2-class docs for consistency
    fiddled with vignette
    preliminary code to allow non-monotonic profiles
    preliminary add nlm to list of optimizers (untested)
    add aod, Hmisc, emdbook to VignetteDepends and Suggests:

0.7 better df extraction in ICtab
    minor bug fix for AICc (allows AICc of nls objects)
    handle models with -1 in formula better:
	starting values set "all equal"
    made ANOVA formula line-length accessible
    added skip.hessian and trace arguments to mle2
    messed around with BIC definition -- attempt at consistency with nlme
    added rudimentary support for nlminb, constrOptim
    nlme now required for fdHess (which is required for
	nlminb since it doesn't compute a finite-diff
	Hessian)

0.6 add experimental formula interface
    change all names from mle to mle2 to avoid confusion/conflicts
       with stats4 version of mle
    change internal structure of data evaluation
    worked on vignette
    added optimizer slot (stub)

0.5 fix AICc bug!  (was deviance+2*k*(k+1)/(n-k-1), not AIC+2*k*(k+1)/(n-k-1)

0.4 change AIC to AICc for corrections
    add AICtab for weights, delta, sort ... options

    expose error messages occuring within profile()
    uniroot tries harder to find a valid endpoint
    truncate terms in anova.mle at 80 characters

0.3: enhanced anova method, works with print.anova
tweaked namedrop() code -- ??

0.2: added parnames, parnames<-
minor fix to allow "profiles" of 1-parameter models
  (skip fdHess call)
minor change to print method for mle results
tweaking "vecpar" (to allow parameter vectors in objective function)
removed fdHess/nlme dependency