Fixed IndexOutOfRangeException issue with range queries on QuickInter…

…valTree

Updated CHANGELOG for v1.2.1

CHANGELOG updated for v1.2.0

Release v1.1.0 updates

README updated with net8 benchmark run

README and CHANGELOG updated for v0.9.0

README and CHANGELOG updated for v0.8.0

LightIntervalTree now performs a linear scan on small subtrees

README updated with new perfomance numbers

README updated with latest progress and perf

Updated benchmarks and README