Also filter out .ps1 files
Add @external_resource attribute, closes #2455
Remove usage of :filelib functions

This is to work around a regression in 17.1 where many
:filelib functions were broken. More information read:

http://erlang.org/pipermail/erlang-bugs/2014-June/004465.html
Change precedence of & to not special case /
Update CHANGELOG
No need to reverse a list when building an iolist
Use iodata_to_binary in join/2 and map_join/3

Everything is previously converted to a string using
the String.Chars protocol, so we can just treat it
as iodata.
Fix regression when case is used inside cond head
Bump Hex version requirement
Enum.sort_by/3

Enum.sort_by/3 takes a collection, a mapper function, an an optional
sorter function.  The function sorts by the mapped value using the sorter.
The optional sorter default to `<=/2`.
Add @doc for Enum.sort_by/3
Add @spec for Enum.sort_by/3
Update documentation on Kernel.var!/2

The documentation is no longer accurate since passing atoms to `Kernel.var!/2` has been deprecated and removed.
Merge pull request #2463 from hamiltop/master

Update documentation on Kernel.var!/2
Release v0.14.2
Start v0.14.3-dev
Match test lines by proximity, closes #2450
Improve <<>> docs
Update (soft) deprecations
Improvements to the operator table

  * |>, <<<, >>> and ^^^ were made left associative

  * <, >, <=, >= were given higher precedence than
    comparison ones (==, !=, etc)

  * xor is deprecated