Performance measurement / benchmarking

[spoltier]

What's the problem this feature will solve?

For some uses of XLConnect (e.g. writing / reading large workbooks), speed and memory requirements can become an issue.
Implement a set of benchmarks / performance / load tests that can be used to evaluate the performance impact of changes.

Describe the solution you'd like

When I change / extend the implementation of an existing feature in XLConnect, I have access to feedback regarding its performance impact.

Alternative Solutions

The time required to run existing tests may be used as a measurement. These do not use large amounts of data however, so they are limited for benchmarking purposes.

Additional context

No response