Version 2.0.4  - 2024-08-01   Author-Title search expression tweaked for greater accuracy.
Version 2.0.3  - 2024-07-31   Author-Title search works and updates the record without use of ISBN or other identifier
Version 2.0.2  - 2024-07-22   Added 1.6 second pause so as not to exceed LoC SRU search limits and changed name of plugin to forked title.
Version 2.0.1  - 2024-07-11   Redesigned Classify scrape to search for matching records at the Library of Congress SRU server and parse MODS3.8 to return LCC and DDC. still working on FST, VIAF, and OCLC
Version 1.0.65 - 2023-04-16   Bug fix. Change in multiple-response re-do trigger.
Version 1.0.64 - 2023-04-15   Automatically get oclc-wi if needed to obviate need to get oclc-wi via Author/Title.  This automatically turns on saving all LC Identifiers, regardless of customization.  
Version 1.0.63 - 2023-04-14   Miscellany
Version 1.0.62 - 2023-04-13   Miscellany
Version 1.0.61 - 2023-04-12   Add back self.detect_isbn_changes_to_refresh.
Version 1.0.60 - 2023-04-06   LCEAD preferences and widgits removed from within Customization.
Version 1.0.59 - 2023-04-06   Miscellaneous technical improvements.  Also, the LCCN Identifier values are automatically converted so that they may be used as-is with the URL to the Library of Congress Permalinks to the book's author. The format for one possible Permalink is:  https://lccn.loc.gov/n80126289 where the n80126289 is the LCCN value from Library Codes.  A better link to it is:  https://id.loc.gov/authorities/names/n80126289.html  You may set either of these links in Calibre > Preferences > Look & Feel > Book Details.  
Version 1.0.58 - 2023-04-05   Enhancments to increase speed of execution of LC, plus other technical improvements.
Version 1.0.57 - 2023-04-05   Enhancement to add a new menu item to use a book's Author & Title to download its OCLC-WI Identifier, which in turn can be used in lieu of a missing ISBN/ISSN to download the same metadata (DDC, LCC, FAST Tags, etc.) that ISBN/ISSN would make available if they were not missing.  Enhancements to download more metadata.  Changes to ToolTips.  Changes to Customization.
Version 1.0.56 - 2023-04-01   Streamlined the new "no Classify API", webscraping-based version of LC, to remove deprecated functions requiring the old Worldcat API.  New: added the creation of 3 Identifiers:  OCLC-OWI; OCLC-WORLDCAT; VIAF_AUTHOR_ID.  LC Customization revised to be consistent with both of the previous.
Version 1.0.55 - 2023-03-31   No API:  Life-Support Replacement for API that requires a Key since December 2022.
Version 1.0.54 - 2023-01-18   Qt.core.   
Version 1.0.53 - 2022-07-14   Enhancements to the "eBook"/"Book" criteria for multi-work responses.
Version 1.0.52 - 2022-04-19   If a return code of '4' is received, and its attributes include 'wi' (not 'owi'), create a new RC of '2' using the syntax http://classify.oclc.org/classify2/Classify?wi=nnnnnnn
Version 1.0.51 - 2022-03-19	   Qt6 compatibility.  Minimum Calibre version 6.0.0
"eBook" added to "Book" as a possible work type for multi-work responses from Classify's API.
Version 1.0.50 - 2020-12-22    Miscellaneous Technical changes.
Version 1.0.49 - 2020-12-15    Miscellaneous technical improvements.
Version 1.0.48 - 2020-11-24    Favourites plugin accommodation.
Version 1.0.47 - 2020-08-11	   Qt tweaks for small displays.
Version 1.0.46 - 2020-07-22	   New menu option to remove redundant LCEAD Tags that already exist as FAST Tags for the same selected books.  
Version 1.0.45 - 2020-07-17    Major webscraping rewrites due to Worldcat site changes.  Configuration Dialog greatly enhanced for both validation of user settings and ToolTips.
Minimum Calibre Version remains 4.6.  BeautifulSoup 3 is no longer supported.  Tested in Calibre 5 Beta 4.99.7 and required no changes.
Version 1.0.44 - 2020-07-12    Miscellaneous technical changes to customization and ToolTips.
Version 1.0.43 - 2020-07-02    Additional DEBUG statements added; Technical change to customization.
Version 1.0.42 - 2019-12-30    Technical changes after Python 3.8 testing with Calibre 4.99.2
Version 1.0.41 - 2019-04-30    Python 3 compatibility
Version 1.0.40 - 2019-04-27    Python 3 compatibility & Calibre Version 3.41.3 pdf-to-html compatibility (ISSN extraction from PDFs)
Version 1.0.39 - 2019-04-13    Use standard Calibre's BeautifulSoup, and choose bs3 .findAll or bs4 .find_all dynamically based on its attributes
Version 1.0.38 - 2018-10-15    Version 1.037 functionality has been removed in favor of using the Job Spy plugin's Scrub Tags tool.
Version 1.0.37 - 2018-10-14    LCEAD Tags and FAST Tags: option to prepend any specified prefix to each Tag.
Version 1.0.36 - 2018-10-12    FAST Tags: more work.
Version 1.0.35 - 2018-10-11    FAST Tags added to LC Customization.  FAST retrieved as Tag-Like.
Version 1.0.34 - 2018-05-17    Function "Find Alternatives to a Non-Responsive ISBN" has been redesigned due to current Google Search Books API restrictions.
Version 1.0.33 - 2018-05-16    Function "Extraction of ISSN from PDF periodicals" changed to reflect Calibre changes to its pdf-to-html function.
Version 1.0.32 - 2018-05-15    Techncial and functional enhancements to ISBN scrubbing.
Version 1.0.31 - 2018-05-13    Enhanced scrubbing of ISBNs.
Version 1.0.30 - 2017-05-21    Technical changes.
Version 1.0.29 - 2017-05-11    Technical changes for Calibre 3.0.0 compatibility.
Version 1.0.28 - 2017-05-05    Allow themes with user-defined icons.
Version 1.0.27 - 2016-06-24    Compatibility improvement for use with Linux and OSX
Version 1.0.26 - 2016-05-26    Bug fix.
Version 1.0.25 - 2016-05-25    Technical changes.
Version 1.0.24 - 2016-04-02    DDC Pie Charts
Version 1.0.23 - 2016-03-26    Attempt to solve OSX subprocess issue.
Version 1.0.22 - 2016-03-23    Technical changes.
Version 1.0.21 - 2016-03-22    Revised LCC to Genre mapping logic, plus a corresponding template CSV file.
Version 1.0.20 - 2016-03-21    New:  Updating of #genre (or any other text custom column) by mapping the DDC or LCC to Table _lc_genre_mapping, which is automatically seeded with over 2,470 DDC rows.
Version 1.0.19 - 2016-02-14    Miscellaneous enhancements.
Version 1.0.18 - 2016-02-13    Technical changes to improve performance in extracting ISSNs from PDFs.
Version 1.0.17 - 2016-02-13    New: ISSN Extraction from Magazine/Periodical PDFs for use in deriving DDC, LOC, etc.
Version 1.0.16 - 2016-01-30    Technical changes to improve performance in webscraping.
Version 1.0.15 -  2015-12-04   New Menu Option:  Attempt to Substitute Non-Responsive ISBN Using Author/Title [Selected Single Book]; Technical tweaks.
Version 1.0.14 -  2015-12-02   Many enhancements, especially to using 'OCLC-OWI" to retrieve 'OCLC' which in turn is used to retrieve 'LOC_LCCN'.  Menu and ToolTips changes.  BISAC-type LCEAD column data for Fiction is now retrieved (Non-Fiction already was).
Version 1.0.13 -  2015-11-30   New Identifier:  'LOC_LCCN', which is the  'Library of Congress-LCCN'.  For books assigned LOC LCCNs after the year 1999, they (probably) have a permalink of: http://lccn.loc.gov/NNNNNNNNNN where the LCCN is a 10-digit number starting with the year (2NNN)
Version 1.0.12 -  2015-11-25   Technical tweak.
Version 1.0.11 -  2015-11-25   Additional LCEAD using OCLC.  Most useful for Factual/Non-Fiction.  Since LCEAD column is Tag-Like, any 'commas' have been replaced with the 'comma-like' Unicode symbol 'ˏ' that does not confuse Calibre.
Version 1.0.10 -  2015-11-24   New Identifier:  OCLC (Not the same as OCLC-OWI).  OCLC is extremely useful in retrieving LCEAD data.
Version 1.0.9 -  2015-11-23     New Optional Custom Column: LC Extra Author Details (LCEAD), which is a Tag-Like column that is updated with additional author-related information.  It is automatically updated when deriving DDC/LCC, but can be separately updated via its own menu option that uses OCLC-OWI to obtain the LCEAD values.
Version 1.0.8 -  2015-11-21     Deriving ISNI and LCCN Identifiers from VIAF Author ID:  speed of download improved significantly.
Version 1.0.7 -  2015-11-20     New option to delete all non-Library Codes Identifiers.
Version 1.0.6 -  2015-11-20     2 New Identifiers:  ISNI and LCCN derived from VIAF Author ID to enable hot-linking to ISNI.org and Worldcat.org, respectively.  This is done whenever a OCLC-OWI Identifier is otherwise created.
Version 1.0.5 -  2015-11-19     Creation of 2 Identifiers, VIAF.org Author ID and Library of Congress Author Name ID, whenever OCLC-OWI Identifier is otherwise created.  This allows the use of composite custom columns to hot-link to the respective URLs to view extended Author and Book information.
Version 1.0.4 -  2015-11-17     New option to convert ISBN-10s to ISBN-13s.
Version 1.0.3 -  2015-11-16     New option to derive DDC and/or LCC indirectly using Author/Title via OCLC-OWI Identifiers for cases where ISBN is not useful or reliable.
Version 1.0.2 -  2015-11-13     Menu changes.
Version 1.0.1 -  2015-11-12     Technical tweak.
Version 1.0.0 -  2015-11-03     Initial release.
