1.6.0

Allow markers / and | to be used in a custom EEx engine

Add truncate to Time, DateTime and NaiveDateTime to facilitate microsecond precision pruning

Add format_string!/2 and format_file!/2 for automatic code formatting

Support column annotations in quoted expressions with columns: true in Code.string_to_quoted/2

Add DynamicSupervisor designed to manage children that are added and removed dynamically

Make Exception.blame/3 extensible by adding an optional blame/2 callback to exceptions

Improve the printing of guards on blamed exceptions

Add Enumerable.slice/1 and optimize many Enum operations with the new protocol. This allows data-structures with index-based random access to provide a non-linear implementation

Show UTF-8 BOM on inspected strings

Add :strict and :flex breaks - this gives more control over the document fitting

Allow a group to inherit the parent group break

Add force_unfit/1 and next_break_fits/2 which give more control over document fitting

Add collapse_lines/1 for collapsing multiple lines to a maximum value

Allow nest/2 to be :reset or be set to the current :cursor position

Prefix variables with V when emitting Erlang code. This improves the integration with tools such as Erlang code formatters and the GUI debugger

Warn on the use of length(x) == 0 in guards

Warn if catch comes before rescue in try

Warn if heredoc is outdented compared to its closing quotes

Add defguard/1 and defguardp/1 to make it easier to build guard-safe macros

Add compile/2, compile_to_path/3 and require/2 which provide detailed information about warnings and errors

Support the uniq: true flag in for comprehensions

Introduce @deprecated and @since attributes

Rearrange equals and inserts for shorter diff scripts in List.myers_difference/2

Allow :macros and :includes to be given to Record.extract/2

Add Stream.intersperse/2

Update to Unicode 10

Allow passing empty string match to String.replace/4

Support context and language sensitive operations in String.upcase/2 and String.downcase/2. Currently only the :greek context is supported

Support :ascii conversion in String.upcase/2 and String.downcase/2

Add Time.add/3

Perform inclusive checks in assert_in_delta

Add ExUnit.Callbacks.start_supervised!/2

Generate a random seed per test based on the test suite seed

Provide contextual autocompletion: t Enum. will autocomplete types, b Enum will autocomplete callbacks

Provide hints for developers when a bad host name is given to --remsh

Automatically include specs when showing documentation for functions/macros

Improve formatting of behaviours and typespecs by using the formatter

Allow pattern matching and guard expressions when on IEx.break!

Add :discard_threshold to Logger to help with message queue overflow

Add --preload-modules to mix app.start

Allow mix archive.build to bundle dot files via an option

Define a behavior for Mix compiler tasks and return diagnostics from compiler tasks

Track struct dependencies between files and recompile them only if the struct changes

Support :system_env option when specifying dependencies

Add a mix format task that formats the given files (or the files specified in a .formatter.exs file)

Add a new task for time-based profiling with eprof

Run all functions in a describe block by giving the file:line the describe block starts

Report the top N slowest tests with the --slowest N flag

Report the number of doctests and tests separately

Support --include-siblings in reports for umbrella support

Add mix xref graph --format stats

Add --only-nodes and --label filters to mix xref graph

Add mix xref deprecated that shows the callsite of deprecated functions

Warn if init/1 is not defined in GenServer. This brings GenServer closer to the implementation in OTP and aligns all behaviours to require the init/1 callback

surround/3 and surround_many/6 are deprecated in favor of container_doc/6

Specifying map types with variable keys without defining the type as required/optional is deprecated

files/2 and files_to_path/3 are deprecated in favor of compile/2 and compile_to_path/3

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

The :simple_one_for_one strategy is deprecated in favor of DynamicSupervisor

Passing a list of args to Supervisor.start_child/2 is deprecated in favor of DynamicSupervisor

Passing :restart and :shutdown to Task.Supervisor.start_link/2 is deprecated (it should be passed on start child instead)

:case_started and :case_finished events are deprecated in favor of :module_started and :module_finished

Returning {:ok, val} | :error from custom Erlang compilers is deprecated in favor of {:ok, val, warnings} | {:error, errors, warnings}

Enum.partition/2 is deprecated in favor of Enum.split_with/2

Keyword.replace/3 is deprecated in favor of Keyword.fetch/2 and Keyword.put/3

Map.replace/3 is deprecated in favor of Map.fetch/2 and Map.put/3

Macro.unescape_tokens/1 and Macro.unescape_tokens/2 are deprecated in favor of Enum.map/2

Deprecate Range.range?/1 in favor of pattern matching on _ .. _