Merge branch '0.4.0-release'

Update changelog

Update 0.3.0 changelog

Fix regression introduced by 0e36941

The mouse relative position code is not supposed to run on Sierra

Readd pthread error handling

[Full Changelog](ckb-next/ckb-next@v0.2.8...v0.2.9)

Important news:
* Project was moved to the organization since mattanger has disappeared
* Binaries will be renamed in `v0.3.0`

Important changes:
* Significantly lower CPU usage on idle
* Add support for K95 Platinum
* Add support for K68
* Add support for (new) Strafe non-RGB
* Add support for Glaive
* Add support for Harpoon
* Add support for Corsair firmware v3
* Add support for pt\_br layout
* Add support for Japanese layout
* Add macro delays to the GUI
* New FIRMWARE file structure
* GUI warning when daemon is not running
* udev rule to remove joystick tag
* Dynamic keymap patching
* Require Qt >=5.2
* Numerous small fixes and improvements

[v0.2.8](https://github.com/mattanger/ckb-next/tree/v0.2.8) (2017-05-06)

[Full Changelog](mattanger/ckb-next@v0.2.7...v0.2.8)

- `ckb` is now `ckb-next`, __but the binaries will be renamed in `v0.2.9`__
- Releases and release notes are provided from now on [\#10](mattanger/ckb-next#10) [\ckb-next#66](mattanger/ckb-next#66)
- Numerous PRs from `ckb` merged [\#4](mattanger/ckb-next#4)
- SIGSEGV when deleting copied profile is fixed [\ckb-next#38](mattanger/ckb-next#38)
- Modifier keys not working on macOS Sierra are temporarily fixed [\#29](mattanger/ckb-next#29)
- Compilation errors on macOS Sierra are fixed [\ckb-next#134](mattanger/ckb-next#134)
- `make debug` target on Linux is fixed [\ckb-next#79](mattanger/ckb-next#79)
- Heat map animation issues fixed [\#30](mattanger/ckb-next#30)
- Compilation of the music visualizer fixed [\#21](mattanger/ckb-next#21)
- Hardware profile loading error on firmware 2.05 fixed [\#24](mattanger/ckb-next#24)
- Project's own firmware table created, signed and populated with new devices [\ckb-next#60](mattanger/ckb-next#60)
- Arch Linux and Fedora/CentOS packages added [\ckb-next#80](mattanger/ckb-next#80) [\#5](mattanger/ckb-next#5) [\ckb-next#41](mattanger/ckb-next#41)

ckb-next 0.2.7

Preliminary tag, just because ckb-next is no longer ckb.

WARNING: This is NOT a release! Don't download the zip with this tag. Tags are for developers. We are yet to make a release! For now use git to clone the repository.