Keyword argument to disable @warn from `build!`

[paraynaud]

@dpo I added this keyword argument to disable warning from build! consequently to #25. I did not change default behaviour of build!, which warns when no element contribute to a variable. I made this change because it is really convenient for me to use

N = 1500
n = 20000
nie = 50
element_variables = map((i -> sample(1:n, nie, replace = false)), 1:N)

pv = PartitionedVector(element_variables)

to define a large PartitionedVector. It is usefull to push the limits of PartitionedVectors. Unfortunately, I can't ensure that element_variables get every component between 1:n, that why I added the keyword argument.

[codecov[bot]]

Codecov Report

Base: 99.07% // Head: 99.07% // No change to project coverage :thumbsup:

Coverage data is based on head (df6a97b) compared to base (c58ce9d). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

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