Auto merge of nix-rust#391 - fiveop:changelog, r=posborne

Introduce CHANGELOG.md

- Added initial CHANGELOG.md with Changes from Version 0.6.0 and the
  upcoming changes for version 0.7.0.
- Added RELEASE_PROCEDURE.md detailing what changes should be made
  to CHANGELOG.md during a release.
- Added sections about CHANGELOG.md in CONVENTIONS.md and
  CONTRIBUTIONS.md.

CHANGELOG.md

@@ -0,0 +1,90 @@
+# Change Log
+
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+
+### Added
+- Added `lseek` and `lseek64` in `::nix::unistd`
+  ([#377](https://github.com/nix-rust/nix/pull/377))
+- Added accessors `sigmask_mut` and `sigmask` to `UContext` in
+  `::nix::ucontext`.
+  ([#370](https://github.com/nix-rust/nix/pull/370))
+- Added `WUNTRACED` to `WaitPidFlag` in `::nix::sys::wait` for non-_linux_
+  targets.
+  ([#379](https://github.com/nix-rust/nix/pull/379))
+- Added new module `::nix::sys::reboot` with enumeration `RebootMode` and
+  functions `reboot` and `set_cad_enabled`. Currently for _linux_ only.
+  ([#386](https://github.com/nix-rust/nix/pull/386))
+
+### Changed
+- Replaced the reexported integer constants for signals by the enumeration
+  `Signal` in `::nix::sys::signal`.
+  ([#362](https://github.com/nix-rust/nix/pull/362))
+- Renamed `EventFdFlag` to `EfdFlags` in `::nix::sys::eventfd`.
+  ([#383](https://github.com/nix-rust/nix/pull/383))
+
+### Removed
+- Type alias `SigNum` from `::nix::sys::signal`.
+  ([#362](https://github.com/nix-rust/nix/pull/362))
+
+### Fixed
+- Fixed the build problem for NetBSD (Note, that we currently do not support
+  it, so it might already be broken again).
+  ([#389](https://github.com/nix-rust/nix/pull/389))
+
+## [0.6.0] 2016-06-10
+
+### Added
+- Added `gettid` in `::nix::unistd` for _linux_ and _android_.
+  ([#293](https://github.com/nix-rust/nix/pull/293))
+- Some _mips_ support in `::nix::sched` and `::nix::sys::syscall`.
+  ([#301](https://github.com/nix-rust/nix/pull/301))
+- Added `SIGNALFD_SIGINFO_SIZE` in `::nix::sys::signalfd`.
+  ([#309](https://github.com/nix-rust/nix/pull/309))
+- Added new module `::nix::ucontext` with struct `UContext`. Currently for
+  _linux_ only.
+  ([#311](https://github.com/nix-rust/nix/pull/311))
+- Added `EPOLLEXCLUSIVE` to `EpollEventKind` in `::nix::sys::epoll`.
+  ([#330](https://github.com/nix-rust/nix/pull/330))
+- Added `pause` to `::nix::unistd`.
+  ([#336](https://github.com/nix-rust/nix/pull/336))
+- Added `sleep` to `::nix::unistd`.
+  ([#351](https://github.com/nix-rust/nix/pull/351))
+- Added `S_IFDIR`, `S_IFLNK`, `S_IFMT` to `SFlag` in `::nix::sys::stat`.
+  ([#359](https://github.com/nix-rust/nix/pull/359))
+- Added `clear` and `extend` functions to `SigSet`'s implementation in
+  `::nix::sys::signal`.
+  ([#347](https://github.com/nix-rust/nix/pull/347))
+- `sockaddr_storage_to_addr` in `::nix::sys::socket` now supports `sockaddr_nl`
+  on _linux_ and _android_.
+  ([#366](https://github.com/nix-rust/nix/pull/366))
+- Added support for `SO_ORIGINAL_DST` in `::nix::sys::socket` on _linux_.
+  ([#367](https://github.com/nix-rust/nix/pull/367))
+- Added `SIGINFO` in `::nix::sys::signal` for the _macos_ target as well as
+  `SIGPWR` and `SIGSTKFLT` in `::nix::sys::signal` for non-_macos_ targets.
+  ([#361](https://github.com/nix-rust/nix/pull/361))
+
+### Changed
+- Changed the structure `IoVec` in `::nix::sys::uio`.
+  ([#304](https://github.com/nix-rust/nix/pull/304))
+- Replaced `CREATE_NEW_FD` by `SIGNALFD_NEW` in `::nix::sys::signalfd`.
+  ([#309](https://github.com/nix-rust/nix/pull/309))
+- Renamed `SaFlag` to `SaFlags` and `SigFlag` to `SigFlags` in
+  `::nix::sys::signal`.
+  ([#314](https://github.com/nix-rust/nix/pull/314))
+- Renamed `Fork` to `ForkResult` and changed its fields in `::nix::unistd`.
+  ([#332](https://github.com/nix-rust/nix/pull/332))
+- Added the `signal` parameter to `clone`'s signature in `::nix::sched`.
+  ([#344](https://github.com/nix-rust/nix/pull/344))
+- `execv`, `execve`, and `execvp` now return `Result<Void>` instead of
+  `Result<()>` in `::nix::unistd`.
+  ([#357](https://github.com/nix-rust/nix/pull/357))
+
+### Fixed
+- Improved the conversion from `std::net::SocketAddr` to `InetAddr` in
+  `::nix::sys::socket::addr`.
+  ([#335](https://github.com/nix-rust/nix/pull/335))
+
+## [0.5.0] 2016-03-01

CONTRIBUTING.md

@@ -60,8 +60,13 @@ pull' model described there.
 
 Please make pull requests against the `master` branch.
 
-[pr-docs]: https://help.github.com/articles/using-pull-requests/
+If you change the API by way of adding, removing or changing something or if
+you fix a bug, please add an appropriate note to the [change log][cl]. We
+follow the conventions of [Keep A CHANGELOG][kacl].
 
+[cl]: https://github.com/nix-rust/nix/blob/master/CHANGELOG.md
+[kacl]: https://github.com/olivierlacan/keep-a-changelog/tree/18adb5f5be7a898d046f6a4acb93e39dcf40c4ad
+[pr-docs]: https://help.github.com/articles/using-pull-requests/
 
 ## Testing
 

CONVENTIONS.md

@@ -9,6 +9,11 @@ conventions we try to follow have been documented here. If you find an instance
 of either, feel free to remedy the flaw by opening a pull request with
 appropriate changes or additions.
 
+## Change Log
+
+We follow the conventions laid out in [Keep A CHANGELOG][kacl].
+
+[kacl]: https://github.com/olivierlacan/keep-a-changelog/tree/18adb5f5be7a898d046f6a4acb93e39dcf40c4ad
 
 ## libc constants, functions and structs
 

RELEASE_PROCEDURE.md

@@ -0,0 +1,18 @@
+This document lists the steps that lead to a successful release of the Nix
+library.
+
+# Before Release
+
+The release is prepared by a commit with the following changes.
+
+- In CHANGELOG.md, rename the Unreleased section to the new version followed by
+  the date of the release.
+
+# Create Release
+
+# After Release
+
+After the release a commit with the following changes is added to the master
+branch.
+
+- Add a new Unreleased section header to CHANGELOG.md.