Various changes for ePubs that are very short.
Ensure samples are the correct size when the ePub has only one item in the TOC NavMap.
Better deal with anchor tags within TOC/Navmap so samples are created with the correct size.
Book ID 4331:
- content src in navPoint included a hash-path (foo.html#bar), and Sample#content_sample_size_in_bytes was choking. Made that method be able handle those kind of src references.
Book ID 2973:
- Book where NCX TOC didn't have ID of 'toc'. Removed the ID constraint from Quire::Opf#find_toc_item.
Book ID 4198:
- Content was living in nested directories. Gem handles these now.
- Image links using paths with '../'. Matcher understands now.
- strip! on miletype was removing whole file. Change to explicit gsub removal of CRs and CRLFs.
General: Better reporting of errors when source file can't be loaded.
Initial Release