Significant improvements of performance:
BenchmarkDotNet performance tests for formatters and ISources now show (depending on different input format strings) the following improvements compared to v2.7.0:
- increase in speed by up to 40%
- decrease of GC pressure (collects are only GC Generation 0, allocated memory reduced by up to 60%)
Formatting measured with a cached parsed Format, and including the result string returned to the caller. Parser was already optimized with PR #187.