Don't mention the project owner, this is open source
Update pull request creation guidelines
Be more strict about changes in master
"Thank you" sounds better
Merge pull request #1120 from alco/contributing-guidelines

Contributing guidelines
Module.DispatchTracker also records remotes
Provide source information to all dispatches and complement the API
Update mailing list links
development and questions
Add :history_size option to IEx
Fix v helper to work with new :iex_history format
Document :history_size option
Don't reverse v's output
s/less than 0/negative/
Extract history management in its own module
Make IEx helpers use inspect_opts where appropriate

For instance, the v helper would print the results in their entirety
ignoring the "limit" option.
Ensure aliases from macros are properly expanded, closes #1123
Use just the process dictionary for keeping history
Minor code formatting fix
Inline nillify in Process