[PathList] Simplify read_file_system implementation, deal with unicode paths

That seems to be less distracting.

[Validator] Adds space to fix typo in output in Validator

[Commands] Reorganize IPC and Lib

Before: The pattern includes header files that are not listedin source_files
After: The pattern includes header files that are not listed in source_files

[Config] Normalize installation_root to ensure same character encoding

Some characters like "ü" where being represented as `["u", "̈"]` in
ruby < 2.3 and it caused errors down the line.

[Docs] Remove vestigial comment

Update an info message for 1.x: Change xcodeproj → project

[Danger] Fail if there are merges from upstream in the PR

[Executable] fix NameError

[CopyResourcesScript] Add --target-device to ibtool invocation for XIBs #5282

[SourcesManager] Require set before using it

Update copy around updating to the latest build

[Issue Template] Update for pod env & ask for project

Closes #5274

Release 1.0.0

# gpg: Signature made Tue May 10 09:55:44 2016 CDT using RSA key ID 15DDA856
# gpg: Good signature from "Samuel Giddins <segiddins@segiddins.me>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 7B19 37A9 CF66 AEF6 52C9  4090 0119 5BB3 15DD A856