Jih/model selection update

[jonathanishhorowicz]

• Put sections of parameter code into function (e.g.check_particle and check_particle_batch to compare particles to data. These functions are then called by model selection code

• This meant I could remove the arguments for_model_selection and normalise_weights from the ABC functions

• Batch size has been removed from the SMC tracker and input and is now an argument of these new functions. This is so that the model selection code can call it without creating a new input or tracker at each iteration (the batch sizes changes at each model selection iteration).

• Model selection print statements updated to use info()

• Model selection retraining not currently being used due to PosDefException - this may be because the retraining code is not perturbing samples from the previous population's posterior

• Deleted Untitled.ipynb

• Changed the names of the user-level model selection functions to SimulatedModelSelection and EmulatedModelSelection

[codecov-io]

Codecov Report

Merging #37 into master will decrease coverage by 1.45%. The diff coverage is 85.71%.

@@            Coverage Diff             @@
##           master      #37      +/-   ##
==========================================
- Coverage   77.09%   75.63%   -1.46%     
==========================================
  Files          20       20              
  Lines        1004     1022      +18     
==========================================
- Hits          774      773       -1     
- Misses        230      249      +19

Impacted Files	Coverage Δ
src/abc/simulation.jl	100% <ø> (ø)	:arrow_up:
src/abc/io.jl	17.44% <ø> (ø)	:arrow_up:
src/abc/model_selection_io.jl	100% <100%> (ø)	:arrow_up:
src/abc/emulation.jl	100% <100%> (ø)	:arrow_up:
src/abc/rejection.jl	90.32% <82.05%> (-6.35%)	:arrow_down:
src/abc/smc.jl	86.06% <83.75%> (-7.66%)	:arrow_down:
src/abc/model_selection.jl	86.44% <87.59%> (+0.89%)	:arrow_up:

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