Added Cold Damage Support

Adds cold damage to the linked skill(s).

Gem Leveling

Level	Required Level	Required Dexterity	Added Cold Damage	% Increased Chill Duration	Experience to Level
1	15	22	4-6	25%
2	18	26	5-8	26%
3	21	30	6-9	27%	77,012
4				28%
5				29%
6	30	40	9-14	30%
7	33	44	11-16	31%
8	36	48	12-18	32%	703,128
9	40	52	14-21	33%	755049
10				34%
11				35%
12	49	63	20-30	36%
13	52	67	22-33	37%
14	54	69	24-36	38%
15	55	70	25-37	39%
16	56	72	26-38	40%
17
18
19
20

Gem Quality

Each percentage of quality adds +0.35% Chance to freeze.