release statistics

RIOT-OS version	number of files (1)	lines of code (w/o docs) (2)	development time	commits (3)	diffstat (4)	top 5 commiters (5)
2013.08	372	273791 (42989)	---	---	---	---
2014.01	741	315921 (79720)	120 days	584	655 files changed, 59590 insertions(+), 17450 deletions(-)	155 Ludwig Ortmann 141 Oleg Hahm 76 Christian Mehlis 52 Oliver Hahm 32 Kaspar Schleiser
2014.05	1271	173578 (132041)	??? days	617	1170 files changed, 87997 insertions(+), 53701 deletions(-)	145 Ludwig Ortmann 117 René Kijewski 83 Oleg Hahm 69 Martin Lenders 65 Christian Mehlis

1. find . -type f -not -regex '\./\.git/.*' | wc -l
2. find . -type f -not -regex '\./\.git.*' | xargs cat | wc -l; echo "($(find . -name *.[hcS] -not -regex '\./\.git.*' | xargs cat | wc -l))"
3. git log --no-merges --pretty=oneline A..B | wc -l
4. git diff --shortstat A..B
5. git shortlog --no-merges -n -s A..B |head -n 5