dblpbibtex v2.4

This bugfix release fixes:

• Compilation errors on debian 11. Now C++17 filesystem module is preferred over Boost filesystem module.
• Github Actions MacOS build failures. File 'version' is renamed to 'version.txt'. This results in a dblpbibtex version uptick.

dblpbibtex v2.3a

This bugfix release only fixes a minor compiler error in the source code.
The windows executable dblpbibtex.exe is identical to v2.3.

dblpbibtex v2.3

Adjusted to new DBLP URL scheme (fixes issue #14):

https://blog.dblp.org/2020/08/18/new-dblp-url-scheme-and-api-changes/

dblpbibtex v2.2

Better parsing of bib-entry from DBLP, fixes issue #11

dblpbibtex v2.1

Added new feature:

Switch DBLP bib format between 'compact', 'standard' and 'crossref'
using \nocite{dblpbibtex:dblpformat:compact} in your .tex file
or dblpformat=compact in your dblpbibtex.cfg file.
See also https://dblp.org/faq/15696107.html mentioning DBLP formats:

publication records will be exported to BibTeX entries either
in condensed format (0) by giving mandatory data fields only, 
in standard format (1) by giving all available data fields in one single entry, 
or in crossref format (2) by giving all available data fields as above, 
    but splitting data records into a contained inproceedings/incollection entry
    and a containing book/collection entry (if applicable)

dblpbibtex v2.0a

• versioning and packing fixes
• added support to use curl_formadd (deprecated) instead of curl_mime_* for older distributions
• added support to use Boost filesystem module instead of C++17 filesystem module

dblpbibtex v2.00

This is a slight rewrite of dblpbibtex:

• requires a C++17 compiler with filesystem module
• new build system using autotools for linux and VS2017 for windows
• removed dependency on Boost C++ libraries
• now uses libcurl for all http(s) requests
• uses contrib/program_options.hpp and contrib/string_algo.hpp
  (both from https://github.com/cr-marcstevens/snippets)
• fixing issues with downloading and searching references from DBLP and IACR ePrint