Merge pull request #9 from tribal-tec/master

Fix Win32 build
Propose clang-format as coding style tool
Update subtree and GitExternal.
Merge pull request #11 from rdumusc/master

Update subtree and GitExternal.
Remove LAST_RELEASE from Hello project.
Merge pull request #12 from rdumusc/master

Remove LAST_RELEASE from Hello project.
Minor tweak
Merge branch 'master' of https://github.com/BlueBrain/Hello

Conflicts:
	.gitexternals
	CMake/GitExternal.cmake
Revert clang-formatted stuff
Merge pull request #10 from eile/master

Propose clang-format as coding style tool
Fix Win32 build