Sankaku Channel - [Error] HTTP status "429 Too many requests - please slow down..."

[ghost]

When downloading many images at once (100+) gallery-dl fails to download some images. It has some errors like this.

[Error] HTTP status "429 Too many requests - please slow down..." (1/5)
[sankaku][error] An unexpected error occurred:
Traceback (most recent call last):
File "E:\gallery-dl\gallery_dl\job.py", line 44, in run
File "E:\gallery-dl\gallery_dl\extractor\common.py", line 89, in iter
File "E:\gallery-dl\gallery_dl\extractor\common.py", line 96, in async_items
File "E:\gallery-dl\gallery_dl\extractor\sankaku.py", line 40, in items
File "E:\gallery-dl\gallery_dl\extractor\sankaku.py", line 63, in get_images
File "E:\gallery-dl\gallery_dl\extractor\sankaku.py", line 72, in get_image_me
tadata
File "E:\gallery-dl\gallery_dl\extractor\common.py", line 65, in request
File "E:\gallery-dl\gallery_dl\extractor\common.py", line 155, in safe_request
File "C:\Python34\lib\site-packages\requests\models.py", line 937, in raise_fo
r_status
requests.exceptions.HTTPError: 429 Client Error: Too many requests - please slow
down... for url: x

[Hrxn]

Rate limit by the server..
I guess this probably needs some wait mechanism, similar to Exhentai I think.

[ghost]

Thanks for the fix. :)
Waiting for new compiled build.