Cannot download files for comics beginning with a number

[ajurna]

this is a fix for issue #40 .
added a test and made a small change to regex.
not 100% on the regex purpose so would appreciate if this brakes something a test case for it?

[Casvt]

Alright I checked it out and this is what I found:

Function of the regex

The use of the series_regex is not to get the series from the filename, but to clean the extracted series. Sometimes, files have an N. at the start of the filename, to show order, like the following:

1. Infinity Gauntlet #1.cbr
2. Silver Surfer #54.cbr
3. Infinity Gauntlet #2.cbr

The regex removes the prefix, so that the series isn't 1. Infinity Gauntlet, but Infinity Gauntlet.

What caused the problem

The . is not required, so 1 Infinity Gauntlet would also result in Infinity Gauntlet. But because of that, 100 Bullets ends up becoming Bullets. By making the . required (like you did in your commit), we fix the problem.

The test cases

1. Make the dict in the test case not sorted by keys, but instead in the order that the other tests have. Doesn't impact functionality but makes the file more uniform.
2. Change the #1 - 100 to something like #1 - 99, because 100 is already used in the string and we want no confusion over which 100 was picked by the algorithm. Not a single test case in the file uses the same number multiple times to refer to different things.
3. Add a second test case for when the regex should remove the number:

			'1. Infinity Gauntlet #2 - 100 (1999-2009)':
				{'series': 'Infinity Gauntlet', 'year': 1999, 'volume_number': 1, 'special_version': None, 'issue_number': (2.0, 101.0), 'annual': False}

[ajurna]

those changes are added.