0.4.0

A big release with the main feature being the addition of date/time deltas.
I've also tried to bundle as many small breaking changes as possible into
this release, to avoid having to do them in the future.

For the rationale behind each breaking change, see the full changelog

Breaking changes

• LocalDateTime renamed to LocalSystemDateTime.
• LocalSystemDateTime no longer adjusts automatically to changes in the system timezone. Now, LocalSystemDateTime reflects the system timezone at the moment of instantiation. It can be updated explicitly.
• The disambiguate= argument now also determines how non-existent times are handled.
• from_naive() removed in favor of methods on NaiveDateTime. For example, UTCDateTime.from_naive(n) becomes n.assume_utc().
• Renamed ZonedDateTime.disambiguated() to .is_ambiguous().
• Replaced .py property with .py_datetime() method.
• Removed properties that simply delegated to the underlying datetime object: tzinfo, weekday, and fold. date and time now return whenever.Date and whenever.Time objects.
• Renamed .canonical_str() to .canonical_format().
• Renamed DoesntExistInZone to SkippedTime, Ambiguous to AmbiguousTime.
• Renamed min and max to MIN and MAX.

Improved

• Added a disambiguation="compatible" option that matches the behavior of other languages and the RFC5545 standard.
• Shortened the repr() of all types, use space separator instead of T.
• Added sep="T" or " " option to canonical_format()
• OffsetDateTime constructor and methods creating offset datetimes now accept integers as hour offsets.
• Added Date and Time classes for working with dates and times separately.

0.3.4

Improved exception messages for ambiguous or non-existent times (#26)

0.3.3

💾 Add CPython-maintained tzdata package as Windows dependency (#32)

0.3.2

🔓 Relax overly strict Python version constraint in package metadata (#33)

0.3.1

📦 Fix packaging metadata issue involving README and CHANGELOG being installed in the wrong place (#23)

0.3.0

Breaking changes

• 🥒 Change pickle format so that backwards-compatible unpickling is possible in the future.

Added

• 🔨 Added strptime() to UTCDateTime, OffsetDateTime and NaiveDateTime.
• 📋 Added rfc2822()/from_rfc2822() to UTCDateTime, OffsetDateTime and NaiveDateTime.
• ⚙️ Added rfc3339()/from_rfc3339() to UTCDateTime and OffsetDateTime

0.2.1

• added days() timedelta alias
• Improvements to README, other docs

0.2.0

Breaking changes

• 📐Disambiguation of local datetimes is now consistent with zoned datetimes, and is also run on replace().

• 👌Renamed:

  • from_str → from_canonical_str
  • to_utc/offset/zoned/local → as_utc/offset/zoned/local.
  • ZonedDateTime.zone → ZonedDateTime.tz

Added

• ⚖️ Support comparison between all aware datetimes
• 🧮Support subtraction between all aware datetimes
• 🍩 Convenience methods for converting between aware/naive
• 💪 More robust handling of zoned/local edge cases

Docs

• Cleaned up API reference
• Added high-level overview

0.1.0

The first feature-complete release 🚀

• ✅ Implemented OffsetDateTime, ZonedDateTime and LocalDateTime
• ✨ Clarify documentation (reasoning and datetime pitfalls)

0.0.3

🌐 Implement basic UTC-only DateTime