v0.7.0

Breaking changes:

• Remove kotlinx.datetime.Instant and kotlinx.datetime.Clock in favor of kotlin.time.Instant (#506). See https://github.com/Kotlin/kotlinx-datetime?tab=readme-ov-file#deprecation-of-instant for a description of what to do if this causes problems.
• Unify the range of admissible LocalDate and LocalDateTime values on all platforms (#432).
• Rename dayOfMonth to day, monthNumber to month (#84).
• Make DayOfWeek and Month no longer type aliases to java.time.DayOfWeek and java.time.Month (#96).
• Make "UTC" and not "Z" be the timezone identifier for TimeZone.UTC (#474).
• Accept "z" in TimeZone.of, with the same meaning as "Z" (#529).
• Add DateTimeFormat-based KSerializer implementations for datetime entities, and change the default serializers to be based on toString/parse pairs (#415).

Additions:

• Add java.io.Serializable implementations for most of the entities in the library (#143). Thanks for spotting and fixing a potential vulnerability, @lukellmann!
• Add LocalDateRange, a range of LocalDate values (#190). Thanks, @PeterAttardo!
• Add YearMonth and YearMonthRange (#457).

Tweaks and fixes:

• Support obtaining the system timezone on old Debian-based distributions (#430).
• Fix not being able to parse some valid timezone identifiers using the timeZoneId() directive (#444).
• Use the grammar defined in RFC 9557 for parsing timezone identifiers in the timeZoneId() directive, allowing parsing values not present in the timezone database (#531).
• Improved error messages when formatting an invalid DateTimeComponents value (#471).
• Set the JPMS dependency on kotlinx.serialization.core to be optional (#496).