Vectorize search in TryExtractVersion

[gfoidl]

HttpUserAgentParser/src/HttpUserAgentParser/HttpUserAgentParser.cs

Lines 207 to 214 in 324f1a8

	for (; i < haystack.Length; ++i)
	{
	char c = haystack[i];
	if (char.IsBetween(c, '0', '9'))
	{
	break;
	}
	}

and

HttpUserAgentParser/src/HttpUserAgentParser/HttpUserAgentParser.cs

Lines 218 to 225 in 324f1a8

	for (i = 0; i < haystack.Length; ++i)
	{
	char c = haystack[i];
	if (!(char.IsBetween(c, '0', '9') || c == '.'))
	{
	break;
	}
	}