Major update to reduce indexing time and other enhancements and bug fixes

Major update to reduce indexing time and other enhancements.

Enhancements:

• Add first, last and previous links to search and genres feeds
• Add books totals to language choose page
• Add file queue for parallel FB2 archives parsing
• Add documentation site
• Refine authors parsing
• Add simple check for book duplicates
• Refactor scan to parallel queue processing
• Add precompile statements
• Add command line data directory parameter
• Change xml decode for token stream parsing
• Use mime type "application/fb2+zip" in fb2 acquisition links
• Enhance OPDS feed localization
• Refine full text search query

Bug fixes:

• Add UTF-16 books indexing
• Check if service is in interactive mode
• Fix feed page size
• Deduplicate book genres when parsing
• Fix bug in GetCoverImage
• Fix empty plots by replacing buggy StripHTMLTags
• Close zip.ReadCloser
• Fix bug in authors sort name composing
• Change zip Store method for Deflate
• Close opened EPUB file
• Fix STOCK folder permissions #22
• Fix typos

Other:

• Tune logs verbosity
• Change log verbosity for zip parsing
• Make verbosity level case insensitive
• Fix usage help
• Update dependent package versions
• Upgrade Go version
• Clear old commented retentions in commented
• Clear feeds IDs
• Remove redundant SYNC structure

Fix Issue #21

Close issue #21 - skip unsupported book formats in archives

Enhancement in book stock directory structure #20

1. Book stock directory don't contain new folder now by default. New acquired books should be placed in STOCK_DIR. See README.
   Backward compatible with previous separate folder for new books.
2. Logging enhancement
3. Some bugs and typos

Add OPDS-title castomization

v1.0.4

Add OPDS-title custimization

Close Issues #17 and #19

1. Comment out log file in config.yml to write log in stdout
2. Can write both logs in one file (no hangup)
3. Fix fatal error when select book genre in opds

Fix database lock issue #14

Lock mutex while put book in database

Fix file naming Issue #13

v1.0.1

Fix file naming

First production release

Merge pull request #11 from vinser/Add-epub-indexing

Added EPUB

README significantly updated + Patch

README has been significantly updated
Small patch to tune FTS5 tokenizer

Multilingual and documented

Multilingual support and documentation have been significantly improved