API epub generate 1.0.
convert many urls to single epub
auto generate table of contents
EpubBuilder moved to module
merge master
+todo move grabber classes to module
+todo automatically load grabbers from modules (like plugins)
typo  filename_or_url -> url
typo  EpubFileType -> EpubItemType
typo  addr -> page_name
+todo multithread grab pages
+todo DefaultGrabber
QFix removed old docstring
seperation api and convert tool
generate epub to stream or file
rename html2epub.py -> grabber_manager.py
logging instead print
QFix typo
Merge branch 'api'