* Use unique_ptr for Actions instead of manual memory management
* Use unique_ptr in KeywordDatabase
* Use unique_ptr instead of shared_ptr for file formats
* Don't pass shared_ptr to Reader/Writer, use references instead
Also
* Switch to C++17 so we can use map::try_emplace
This means we no longer need 8 different functions for different numbers of arguments, and non-const references can now also be passed to constructors without problems.
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1443 0fc631ac-6414-0410-93d0-97cfa31319b6
MSE now handles opening more gracefully - can handle directories and failures
Changed behavior to always save cards to separate files with intent to add VCS later (note: shouldn't do this for zip, but can't see a good way to approach this)
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1388 0fc631ac-6414-0410-93d0-97cfa31319b6