v0.4.16

• Add %Z specifier to the FromStr, similar to the glibc strptime (does not set the offset from the timezone name)

• Drop the dependency on time v0.1, which is deprecated, unless the oldtime feature is active. This feature is active by default in v0.4.16 for backwards compatibility, but will likely be removed in v0.5. Code that imports time::Duration should be switched to import chrono::Duration instead to avoid breakage.

v0.4.15

Fixes

• Correct usage of vec in specific feature combinations (@quodlibetor)

v0.4.14

Features

• Add day and week iterators for NaiveDate (@gnzlbg & @robyoung)
• Add a Month enum (@hhamana)
• Add locales. All format functions can now use locales, see the documentation for the unstable-locales feature.
• Fix Local.from_local_datetime method for wasm

Improvements

• Added MIN and MAX values for NaiveTime, NaiveDateTime and DateTime<Utc>.

v0.4.13

Features

• Add DurationRound trait that allows rounding and truncating by Duration (@robyoung)

Internal Improvements

• Code improvements to impl From for js_sys in wasm to reuse code (@schrieveslaach)

v0.4.12

New Methods and impls

• Duration::abs to ensure that a duration is just a magnitude (#418 @abreis).

Compatibility improvements

• impl From for js_sys in wasm (#424 @schrieveslaach)
• Bump required version of time for redox support.

Bugfixes

• serde modules do a better job with Option types (#417 @mwkroening and #429 @fx-kirin)
• Use js runtime when using wasmbind to get the local offset (#412 @quodlibetor)

Internal Improvements

• Migrate to github actions from travis-ci, make the overall CI experience more comprehensible, significantly faster and more correct (#439 @quodlibetor)

v0.4.11

Improvements

• Support a space or T in FromStr for DateTime<Tz>, meaning that e.g.
  dt.to_string().parse::<DateTime<Utc>>() now correctly works on round-trip.
  (@quodlibetor in #378)
• Support "negative UTC" in parse_from_rfc2822 (@quodlibetor #368 reported in
  #102)
• Support comparisons of DateTimes with different timezones (@dlalic in #375)
• Many documentation improvements

Bitrot and external integration fixes

• Don't use wasmbind on wasi (@coolreader18 #365)
• Avoid deprecation warnings for Error::description (@AnderEnder and
  @quodlibetor #376)

Internal improvements

• Use Criterion for benchmarks (@quodlibetor)

v0.4.10

Compatibility notes

• Putting some functionality behind an alloc feature to improve no-std support (in #341) means that if you were relying on chrono with no-default-features and using any of the functions that require alloc support (i.e. any of the string-generating functions like to_rfc3339) you will need to add the alloc feature in your Cargo.toml.

Improvements

• DateTime::parse_from_str is more than 2x faster in some cases. (@michalsrb #358)
• Significant improvements to no-std and alloc support (This should also make many format/serialization operations induce zero unnecessary allocations) (@CryZe #341)

Features

• Functions that were accepting Iterator of Items (for example format_with_items) now accept Iterator of Borrow<Item>, so one can use values or references. (@michalsrb #358)
• Add built-in support for structs with nested Option<Datetime> etc fields (@manifest #302)

Internal/doc improvements

• Use markdown footnotes on the strftime docs page (@qudlibetor #359)
• Migrate from try! -> ? (question mark) because it is now emitting deprecation warnings and has been stable since rustc 1.13.0
• Deny dead code

v0.4.9

Fixes

• Make Datetime arithmatic adjust their offsets after discovering their new timestamps (@quodlibetor #337)
• Put wasm-bindgen related code and dependencies behind a wasmbind feature gate. (@quodlibetor #335)

v0.4.7

Fixes

• Disable libc default features so that CI continues to work on rust 1.13
• Fix panic on negative inputs to timestamp_millis (@cmars #292)
• Make LocalResult Copy/Eq/Hash

Features

• Add std::convert::From conversions between the different timezone formats (@mqudsi #271)
• Add timestamp_nanos methods (@jean-airoldie #308)
• Documentation improvements

v0.4.6

Maintenance

• Doc improvements -- improve README CI verification, external links
• winapi upgrade to 0.3

Features

• Added NaiveDate::from_weekday_of_month{,_opt} for getting eg. the 2nd Friday of March 2017.