Print out contributors since release

[skotzko]

Call bash tools/contributors.sh to get contribs since last release. Thx @Horusiath for the formatting suggestions.

Example usage below.

>> bash tools/contributors.sh

6 contributors since release v1.0.5

COMMITS	LOC+	LOC-	AUTHOR
4	83	24470	Aaron Stannard
2	24475	43	Bartosz Sypytkowski
2	1136	7	rogeralsing
1	364	113	JeffCyr
1	27	0	Andrew Skotzko
1	2	2	easuter

or:

>> bash tools/contributors.sh v1.0.4

32 contributors since release v1.0.4

COMMITS	LOC+	LOC-	AUTHOR
18	5410	42582	Aaron Stannard
17	4637	1394	maxim.salamatko
12	1506	343	rogeralsing
11	40804	2541	Bartosz Sypytkowski
8	1667	320	Graeme Bradbury
7	576	40	Marek Kadek
6	1149	407	Sean Gilliam
4	208	72	willieferguson
3	39	21	Alexander Pantyukhin
2	9496	2498	Steffen Forkmann
2	71	6	Emil Ingerslev
2	5	496	Alex Koshelev
2	30	6	evertmulder
2	26	16	Silv3rcircl3
2	19	14	Filip Malachowicz
2	11	2	Suhas Chatekar
1	98	52	Christian Palmstierna
1	63	22	Willie Ferguson
1	61	5	Grover Jackson
1	6	1	tintoy
1	54	1	rdavisau
1	364	113	JeffCyr
1	33	23	Uladzimir Makarau
1	27	0	Andrew Skotzko
1	269	108	Jeff Cyr
1	2	2	easuter
1	2	2	Jonathan
1	18	33	alex-kondrashov
1	1118	0	moliver
1	1	1	neekgreen
1	1	1	Christopher Martin
1	1	1	Artem Borzilov