Updated printout statement for MultilevelEstimators

[Philippe1123]

Updated printout. Printout now shows xxpected value, expected value of difference, variance and variance of difference for each level.

[codecov-io]

Codecov Report

Merging #1 into master will decrease coverage by 1.57%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master       #1      +/-   ##
==========================================
- Coverage   23.97%   22.39%   -1.58%     
==========================================
  Files          16       15       -1     
  Lines         830      826       -4     
==========================================
- Hits          199      185      -14     
- Misses        631      641      +10

Impacted Files	Coverage Δ
src/print.jl	0% <0%> (ø)	:arrow_up:
src/methods.jl	0% <0%> (ø)	:arrow_up:
src/options.jl	50% <0%> (-20%)	:arrow_down:
src/distribution.jl	73.68% <0%> (-6.32%)	:arrow_down:
src/internals.jl	30.43% <0%> (-3.47%)	:arrow_down:
src/index_set.jl	50.84% <0%> (-2.49%)	:arrow_down:
src/estimator.jl	84.61% <0%> (-1.1%)	:arrow_down:
src/parse.jl	81.7% <0%> (-0.23%)	:arrow_down:
src/MultilevelEstimators.jl

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[coveralls]

Pull Request Test Coverage Report for Build 198

• 0 of 17 (0.0%) changed or added relevant lines in 2 files are covered.
• 7 unchanged lines in 5 files lost coverage.
• Overall coverage decreased (-0.8%) to 22.334%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/print.jl	0	8	0.0%
src/methods.jl	0	9	0.0%
<!--	Total:	0	17	0.0%	-->

Files with Coverage Reduction	New Missed Lines	%
src/distribution.jl	1	73.68%
src/index_set.jl	1	50.85%
src/methods.jl	1	0.0%
src/internals.jl	2	30.43%
src/options.jl	2	50.0%
<!--	Total:	7		-->

Totals
Change from base Build 197:	-0.8%
Covered Lines:	553
Relevant Lines:	2476

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💛 - Coveralls