html history-export and binary packages

• add export of command history to an interactive html-plot
• provide a DEB-package for Debian based distributions
• simplify using the bash-integration by providing a "SOURCE_ME.bash"
• improve human output format, e.g. by printing only a limited number of files per command
• improve precision of command start time
• improve query/delete database performance
• add more options for the --query and --delete sub-commands

New Features and minor bug-fixes

• Additionally allow for logging arbitrary read-events without file-content storage.
• Hidden paths are now excluded by default for read-, script- and write events. Hidden paths explicitly
  set in include_paths are not affected.
• When loading paths from config file, the following symbols are now resolved: $HOME, ~, $CWD
• New query-option '--output-format' with two allowed values: 'human' and 'json' (the latter was added).
• Fix relative path resolution in shell integration which caused some file-events
  to not get logged (test case added).
• Better handling of fanotify-read-failures.
• Improve compatibility with higher cmake-versions
• replace https://github.com/mandeepsandhu/qt-ordered-map with
  https://github.com/Tessil/ordered-map because of
  by valgrind reported memory errors and greater community support.
• Better handling of config-file scheme-updates: preserve order of sections
  and keys also under awkward circumstances.

First public version

The project has been in use for quite some time with a smaller user base at the institute I work at, that's why the first version published here is already labeled 2.0.