1.8.0

Optimize the default template engine to compile and execute more efficiently

Add Calendar.TimeZoneDatabase and a Calendar.UTCOnlyTimeZoneDatabase implementation

Add callbacks day_of_year/3, quarter_of_year/3, year_of_era/1, and day_of_era/3

Preserve user's choice of new line after most operators

Add Date.day_of_year/1, Date.quarter_of_year/1, Date.year_of_era/1, and Date.day_of_era/1

Add DateTime.from_naive/3, DateTime.now/1, and DateTime.shift_zone/3

Allow :raw option in File.exists?/2, File.regular?/2, and File.dir?/2

Allow POSIX time as an integer in File.touch/2 and File.touch!/2

Allow Inspect protocol to be derivable with the :only/:except options

Do not propagate counters to variables in quote inside another quote

Warn on ambiguous use of :: and | in typespecs

Add :delegate_to @doc metadata tag when using defdelegate

Improve compile-time building of ranges via the .. operator

Compile charlist interpolation more efficiently

Add floor/1 and ceil/1 guards

Add :reduce option to for comprehensions

Add List.myers_difference/3 and List.improper?/1

Add Macro.struct!/2 for proper struct resolution during compile time

Optimize and merge nested maps put and merge operations

Add Range.disjoint?/2

Reduce memory allocation when updating multiple fields in a record

Allow associating a value on :via tuple

Add String.bag_distance/2

Add $callers tracking to Task - this makes it easier to find which process spawned a task and use it for tracking ownership and monitoring

Add ExUnit.after_suite/1 callback

Show last N messages (instead of first N) from mailbox on assert_receive fail

Add port/1 and port/2

Expose IEx.Server.run/1 for custom IEx sessions with the ability to broker pry sessions

Add Mix.target/0 and Mix.target/1 to control dependency management per target

Add :depth and :parents options to deps_paths/1

Add a timeout when installing archives

Include optional dependencies in :extra_applications

Add a timeout when installing escripts

Warn when the same file may be formatted by multiple .formatter.exs

Allow setting the maximum number of failures via --max-failures

Print a message instead of raising on unmatched tests inside umbrella projects

Passing a non-empty list to Enum.into/2 was inconsistent with maps and is deprecated in favor of Kernel.++/2 or Keyword.merge/2

surround/3 is deprecated in favor of Inspect.Algebra.concat/2 and Inspect.Algebra.nest/2

surround_many/6 is deprecated in favor of container_doc/6

Using @since will now emit a unused attribute warning. Use @doc since: "1.7.2" instead

Passing a non-empty list as :into in for comprehensions was inconsistent with maps and is deprecated in favor of Kernel.++/2 or Keyword.merge/2

files/2 is deprecated in favor of compile/2

files_to_path/2 is deprecated in favor of compile_to_path/2

files/2 is deprecated in favor of Kernel.ParallelCompiler.require/2

:seconds, :milliseconds, etc. as time units is deprecated in favor of :second, :millisecond, etc.

System.cwd/0 and System.cwd!/0 are deprecated in favor of File.cwd/0 and File.cwd!/0

Returning {:ok, contents} or :error as the callback in Mix.Compilers.Erlang.compile/6 is deprecated in favor of returning {:ok, contents, warnings} or {:error, errors, warnings}