Fixed Issue #1506, added description of return values for Code.eval_string and Code.eval_quoted
Fixed additional doc typos in Code module
Move definition of with_index below

Right now is defined in the middle of two definitions of max function.
Merge pull request #1511 from guilleiguaran/with_index

Move definition of with_index below
Fix usage of char_list and fix the build
Remove another invalid syntax sample
Fix Enum.at docs
Using 'binding' to refer to a keyword list of variable bindings
Fixed typos in Enum docs
Merge pull request #1513 from ericmj/enum-at-docs

Fix Enum.at docs
Merge pull request #1509 from jwarwick/issue_1506

Return values for Code.eval_string and Code.eval_quoted
Merge pull request #1514 from jwarwick/enum_docs

Fixed typos in Enum docs
Make & an unary operator
Get rid of buggy System.halt/2

Closes #1515, thanks to @AtKaaZ for debugging and pinpointing
this function as the root cause for output issues on Windows.
Update CONTRIBUTING.md

Feature requests should be discussed over the core mailing list.
Remove old mix artifacts without a need for force or changes
always remove unmatched beam files when compiling
Fixed problem with elixir.bat removing exclamation marks from command line
Merge pull request #1517 from ToJans/master

Fixed problem with elixir.bat removing exclamation marks from command line
Fixing doc typos in File