Add a new data file

[asdetrefle]

Added a new data file for benchmark. It contains 41k rows and 21 columns. It is the stocks bid/ask price and qty generated from simulation.

[sadikovi]

How large is the file? If it is too large we could generate it before each benchmark, as we have (almost) all of the functionality to do so now.

Should we update the benchmark as well and post results on PR?

Is it possible to get a breakdown of time spent like the one you mentioned in the related issue?

[asdetrefle]

1.3M is that ok?

[coveralls]

Pull Request Test Coverage Report for Build 601

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.008%) to 95.491%

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Files with Coverage Reduction	New Missed Lines	%
encodings/encoding.rs	1	94.82%
<!--	Total:	1		-->

Totals
Change from base Build 600:	-0.008%
Covered Lines:	12049
Relevant Lines:	12618

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💛 - Coveralls

[sadikovi]

Should be alright, IMHO.