# tinyVAST 1.6.0

* Adding nearest-neighbors Gaussian Process option 
* Add tinyVASTcontrol(tmb_random) argument to allow exploration of penalized likelihood
* Modifying tinyVASTcontrol(tmb_par) to allow users to supply a partial list of starting values, e.g., to provide values for semi-variance parameters when changing model resolution.
* Add `development$optimizer` argument for using optim(method="L-BFGS-B") or `TMB::newton`, which is necessary when using penalized likelihood with >40,000 random effects.  And removing tinyVASTcontrol option for suppress_optim_warnings (making it always TRUE)  
* Adding Makevar -DTMBAD_INDEX_TYPE=uint64_t to allow GetTape for RTMB manipulation
* Change SAR using areal_model for `spatial_domain` to (1) eliminate row-standardization (which messed up the areal interpretation), and (2) defining an informative start for kappa to start with a value that avoids numerical under/overflow;
* Adding argument `block` to `integrate_output` to allow calculating multiple derived quantities using a single call (to avoid extra MakeADFun calls)

# tinyVAST 1.5.1

* Fix bug, where previous versions where not simulating measurement errors for delta-models using obj$simulate().  h\t github ilar-cloud for reporting on issue-402

# tinyVAST 1.5.0

* Add starting value log_kappa when using SPDE method, using SD of X and Y coordinates and converting to equivalent kappa
* Fix bug in `project` for logical class in empty vectors
* Add `development` options to explore hess-compress option (and commenting out incomplete Cholesky for now)
* Add `sanity` function to check for evidence of non-convergence
* Improve detection of sf class for areal models

# tinyVAST 1.4.0

* Adding `student` distribution, borrowing/importing code from sdmTMB
* Changing `deviance_explained` to map off student DF at MLE to avoid negative values, in way that can be easily generalized.
* Changing `deviance_explained` to map off overdispersion for negbin1 and negbin2
* Changing `deviance_explained` to map of power parameter for tweedie distribution
* add testthat checks comparing tweedie and negbin2 deviance-explained for tinyVAST with mgcv package
* Add vignette for seasonal spatio-temporal index standardization, using Yellowtail flounder data from VAST demo

# tinyVAST 1.3.0

* Adding `add_vertex_covariates` to associate mesh vertices with covariates (h\t Sean Anderson)
* Adding option for covariate-based anisotropy using `vertex_formula`, while also allowing geometric anisotropy.
* Adding option for barriers using `triangle_formula` which permits an offset for barrier covariates
* Adding `spatial_cor` to use sparse matrices to compute the correlation between a `coord` and `pred` coordinates, e.g. to visualize covariate-based anisotropy
* Fix `make_eof_ram` to work as intended for multivariate models, e.g., having a separate response map and shared indices across variables (previously had a shared response map and shared indices, i.e., collapsed to univariate model)
* Fix bug arising in `predict` when `spatial_varying` involved a column of `newdata` that was expecting a factor, but provided a `character-vector`. Now coercers to factors using the levels of the original `data` (same behavior as for `formula`)
* Export `fit$rep$negloglik_i` as log-likelihood for each datum, for use in calculating out-of-sample predictive score
* Turn off SE reporting during index calculations (as speedup), and allow SE reporting for `mu_g` in `predict`
* Fix bug arising in `project` when `spatial_varying` was specified
* Adding web-only vignette showing predator-expanded diet estimator using joint model of specific stomach contents and predator density
* Fix bug arising when using `weights` argument using family of `delta_gamma` or `delta_lognormal`, where this 
  bug was introduced in release 1.2.0 (h/t Peri Gerson for identifying the issue)
* Add vignette showing `project` function
* Add a web-only vignette showing the sponge-coral-fish case study to illustrate spatial structural modelling

# tinyVAST 1.2.0

* Adding a new spatial domain using `sf::st_make_grid`
* Adding option for geometric anisotropy when using `sf::st_make_grid`
* Fix bug in deviance for lognormal distribution in delta models (h/t Sean
  Anderson for finding it)
* Change family = "binomial" to use `weights` as number of Binomial trials N
* Fix `deviance_explained` to work with non-default `weights` argument
* Add `fit$internal$packageVersion` to allow `predict`, `cAIC` etc to check
  and throw error if there's a package inconsistency between object and installed
  package
* Add `conditional_gmrf` to do conditional simulations from a GMRF
* Add `project` to project tinyVAST forward in time
* Eliminate `...` argument to `tinyVAST` so that it's obvious if an argument
  is mis-named.
* Fix bug which previously resulted in non-converged models, where including DSEM arrow
  "x<->x, 0, sd_xy" would improperly add another term "x <-> x, 0, V[x]" because
  it didn't previously parse the whitespaces when detecting missing covariances
  (h/t Jon Reum for flagging the issue)

# tinyVAST 1.1.1

* Adding option for geometric anisotropy when using the SPDE method
* For some reason, the CPP edits also address an error message
  during `devtools::check_win_devel` "array subscript 'const __m128i[0]' is
  partly outside array bounds of 'unsigned char [12]'"

# tinyVAST 1.1.0

* Adding `term_covariance` to calculate the covariance among variables for SEM term,
  or covariance among variables-and-lags for DSEM terms
* Adding Restricted Spatial Regression estimator for covariates `alphaprime_j` and `alphaprime2_j`
  to `fit$rep` output.
* Adding methods to allow use of `cv` to calculate crossvalidation skill
* Add `bias.correct` option to predict (but still no flag for SEs for anything except p_i)
* Switch `sample_variable` from using `obj$env$MC` to `obj$env$spHess(random=TRUE)`
  which seems more stable as dependency
* Add functionality for `te` and `ti` splines, although they remain poorly tested
* Add error check to `sfnetwork_mesh` to detect if the stream network is not ordered
  as a tree
* Improve stream network vignette to use matrix notation for joint precision, and
  modify `simulate_sfnetwork` to use that
* Change `tinyVAST.cpp` to use matrix notation constructor and fix bug in previous
  constructor where the covariance between first and second nodes was not right
* Expand `test-sfnetworks.R` integrated test to confirm that matrix-notation
  precision constructor is identical to the inverse of Ornstein-Uhlenbeck covariance
  as intended.

# tinyVAST 1.0.1

* Modify examples for `simulate.tinyVAST` and `sample_variable` to try to avoid
  terminal output giving error in valgrind check
* Add `ivector_minus_one` function to satisfy clang-UBSAN
* Swap `GMRF(Q).Quadform(x)` to `x.matrix().transpose() * (Q * x.matrix())` to
  avoid calculating log-determinant of `Q` in the smoothers penalty, to avoid
  valgrind errors
* Add tinyVASTcontrol option that suppresses nlminb warning messages by default,
  which are typically not informative to casual users

# tinyVAST 1.0.0

* Adding nbinom1 and nbinom2 families
* Simplify argument names, by changing `sem` to `space_term`, `dsem` to `spacetime_term`
  and `spatial_graph` to `spatial_domain`, and eliminating `delta_` in the names
  for arguments to `delta_options`
* Add `time_term` to allow time-variable interaction (e.g., AR1 intercepts)
* Adding overview and model-description vignettes
* Add `simulate` S3 generic

# tinyVAST 0.7.1

* Fixed bug (wrong output) when using `predict(fit, what="mu_g")` and
  a Poisson-linked delta model
* Fixed bug (cryptic error message) when using `integrate_output`
* Add `cAIC` (but disabling EDF calculation for now)

# tinyVAST 0.7.0

* Adding option for spatially-varying-coefficient (SVC) models
* Add error-check for when `data` has a factor with extra levels, which
  conflicted with the logic of adding all `origdata` levels to `newdata`
  when calling `predict`, and hence caused an uniformative error previously

# tinyVAST 0.6.0

* Change `integrate_output` interface by splitting `W_gz` and `V_gz`
  into four vectors `area`, `type`, `covariate`, and `weighting_index`
  to simplify documentations and improve naming 
* Fix bug where cloglog and logit links were not previously implemented 
  for use in `predict` and `integrate_output`

# tinyVAST 0.5.0

* Adding vignette showing how to fit multiple data types in an SDM
* Adding `deviance_explained` and calculating this by default

# tinyVAST 0.4.0

* Adding code for simulation residuals, and examples to vignettes

# tinyVAST 0.3.0

* Adding `sdmTMB` as dependency, and importing family options from it
* Adding vignette for joint analysis of condition and density

# tinyVAST 0.2.0

* Add option to specify covariance in SEM and DSEM notation

# tinyVAST 0.1.0

* Initial public alpha release
