Improve types on CCW and CPT

[dehann]

towards #825

[codecov-io]

Codecov Report

Merging #1155 (a1bc487) into master (6ddd346) will decrease coverage by 1.05%.
The diff coverage is 74.82%.

@@            Coverage Diff             @@
##           master    #1155      +/-   ##
==========================================
- Coverage   70.27%   69.21%   -1.06%     
==========================================
  Files          55       55              
  Lines        4282     4281       -1     
==========================================
- Hits         3009     2963      -46     
- Misses       1273     1318      +45     

Impacted Files	Coverage Δ
src/FactorGraph.jl	68.48% <ø> (-3.48%)	⬇️
src/IncrementalInference.jl	85.71% <ø> (ø)
src/Deprecated.jl	25.74% <28.57%> (-10.82%)	⬇️
src/ParametricUtils.jl	62.30% <60.27%> (-5.49%)	⬇️
src/ApproxConv.jl	88.88% <93.75%> (+0.26%)	⬆️
src/CalcFactor.jl	77.27% <100.00%> (ø)
src/DeconvUtils.jl	58.13% <100.00%> (ø)
src/FactorGraphTypes.jl	100.00% <100.00%> (ø)
src/Factors/DefaultPrior.jl	46.66% <100.00%> (+11.37%)	⬆️
src/Factors/EuclidDistance.jl	27.27% <100.00%> (-6.07%)	⬇️
... and 11 more

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