Partial fix for PDFs that resolves broken links to chapters, front and back matter. Links to anchors within chapters are still broken. (#1019)
Merge branch 'hotfix' into dev
differentiating HEAD and GET requests, response from servers
Merge pull request #81 from bdolor/html-import

Differentiating HEAD and GET requests, response from servers to facilitate imports, props to @bdolor.
Sanitize multilevel TOC titles.
rectifies sprintf problem with percentage in parts
Merge pull request #82 from bdolor/epub2

rectifies sprintf problem with percentage in parts
modifying query to allow for non-default table prefix
fixes missing argument php warning
Merge pull request #83 from bdolor/api

modifying query to allow for non-default table prefix