release statistics

RIOT-OS version	number of files (1)	lines of code (w/o docs) (2)	development time(3)	commits (4)	diffstat (5)	top 5 commiters (6)
2013.08	372	49212 (42989)	---	---	---	222 Oliver Hahm 140 Kaspar Schleiser 104 Oleg Hahm 85 mlenders 46 Stephan Zeisberg
2014.01	741	136097 (82777)	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)	126 days	617	1170 files changed, 87997 insertions(+), 53701 deletions(-)	145 Ludwig Ortmann 117 René Kijewski 83 Oleg Hahm 69 Martin Lenders 65 Christian Mehlis
2014.12	27900	306696 (269321)	217 days	1240	2094 files changed, 195774 insertions(+), 60602 deletions(-)	243 Oleg Hahm 231 Ludwig Ortmann 209 Hauke Petersen 149 René Kijewski 74 Martine Lenders
2015.09	16646	491184 (448311)	277 days	2506	2578 files changed, 318050 insertions(+), 133915 deletions(-)	468 Martine Lenders 406 Joakim Gebart 370 Hauke Petersen 334 Kaspar Schleiser 236 Oleg Hahm

1. find . -type f -not -regex '\./\.git/.*' | wc -l
2. find . -type f -not -regex '\./\.git.*' | xargs cat | wc -l; echo "($(find . -name *.[hcS] -not -regex '\./\.git.*' | xargs cat | wc -l))"
3. START=$(git log --pretty="format:%at %d" | grep 'tag: A' | awk '{print $1}'); END=$(git log --pretty="format:%at %d" | grep 'tag: B' | awk '{print $1}'); echo $(( (END - START) /(60*60*24) ))
4. git log --no-merges --pretty=oneline A..B | wc -l
5. git diff --shortstat A..B
6. git shortlog --no-merges -n -s A..B |head -n 5