* ci:
  Tell Appveyor to install GenomeInfoDbData from GH
  Install GenomeInfoDbData on Appveyor
  Install GenomeInfoDB on appveyor
  Tell Appveyor to install devtools
  Update Travis dist to xenial
  Switch appveyor to R release

* master: (49 commits)
  Fix where simpleSimulate stores params
  Check for counts assay when estimating from SCE
  Check spelling
  Build pkgdown
  Run checks
  Rename Splotch to Kersplat
  Add Splotch to listSims
  Document Splotch estimation functions
  Document Splotch simulation functions
  Minor Splotch changes
  Add doublets to SplotchSimulate
  Add ambient expression and empty cells to Splotch
  Rescale Phi when sampling in BASiCSSimulate
  Adjust BASiCSSimulate to match devel BASiCS
  Fix bug in NAMESPACE
  Add BCV adjustment to Splotch
  Add density sampling option for means, lib sizes
  Add violins to comparison plots
  Replace library size log-norm with density
  Fix splotchEstimate example
  ...

Fixes #72

Fixes #82

* kersplat: (23 commits)
  Check spelling
  Build pkgdown
  Run checks
  Rename Splotch to Kersplat
  Add Splotch to listSims
  Document Splotch estimation functions
  Document Splotch simulation functions
  Minor Splotch changes
  Add doublets to SplotchSimulate
  Add ambient expression and empty cells to Splotch
  Add BCV adjustment to Splotch
  Add density sampling option for means, lib sizes
  Add violins to comparison plots
  Replace library size log-norm with density
  Fix splotchEstimate example
  Add expression outliers to Splotch
  Fix bug in selectFit
  Add splotchEstimate function
  Simulate counts and organise functions
  Add library size params and simulate cell means
  ...

* Change default cells.design to end of path
* Add experimental warning
* Avoid resetting cells.design

Might need a bit more work...

* master:
  Rescale Phi when sampling in BASiCSSimulate
  Adjust BASiCSSimulate to match devel BASiCS

* master:
  Fix bug in NAMESPACE

New exponential correction method for bcv.common estimates

Not sure if this this a good plan...

* master:
  Rebuild pkgdown
  Replace sc_example_counts with mockSCE()
  Fix parameter passing in BASiCSEstimate
  Fix bug in diffSCEs QQ plots

Tidy and improve examples

Parameters were not being passed from the SingleCellExperiment method to the
matrix method

Handle missing (not NA) AIC values