Performance improvements

Small performance improvements that help with large buckets

• Direct DateTime comparisons
• Hot path for next() removing array count

BugFix

• Ensure timeIndex is relative to timezone

Performance and Test Suite

Move to using a SplMinHeap for ordered inserts of priorities, removes the need to track sorted status and performing krsort during next(), this improves performance drastically for TimeBucket readers are adding and removing elements in loops.

Introduce PHPUnit and tests for major components

Improve ordered insert

Improve the case where data is always inserted in priority order negating the requirement to sort

Performance boost

PHP8.2 compat

Full Changelog: v0.3...v0.3.1

v0.3

Improved PHP8+ support
Implement support for variable minute intervals (eg 5 minute timeslices)

Full Changelog: 0.2...v0.3

Cloneable

Support deep cloning of TimeBuckets

Initial Timezone support

Change TimeBucketImplementationInterface to TimeOrderedStorageInterface

Add in initial support for timezoned buckets [WIP]

0.1.0

Allow passing a DateTimeZone object into the constructor in addition …