Remove previously generated beams before installing new ones
Report correct location if local.hex failed
Add copy_path! instead of read_path!(..., file: ...)
Test the way System.cmd finds for executables
Change implementation of System.cmd to match the docs
Merge pull request #2789 from alco/system-cmd-path-resolution

System.cmd path resolution
Do not pass false into port command
Merge pull request #2782 from pedrosnk/master

Remove previously generated beams before installing new ones
Merge pull request #2787 from elixir-lang/emj-hex-file-error

Report correct location if local.hex failed
Move printing out of copy_path, always create dir
Define value before using it
Fix spec for surround_many
Fix :stderr_to_stdout option
Send elixir version as parameter when installing hex
Make some docs more gender neutral
Merge pull request #2796 from pdericson/gender

Make some docs more gender neutral
Give higher prio to powershell on windows
Fix documentation of IO module
Merge pull request #2803 from dskecse/fix-io-docs

Fix documentation of IO module
Don't crash on malformed proxy env var