core: plugin-api.hpp now exclusively provides interface
pass -Wall -Wextra, reformat
unused #define declspec dllimport -> #error
cleanup warnings
nix warnings for C translation units
nix spurious debug
joy: nix debug
joy: nix spurious warning with -Wall -Wextra
cmake: add cross-compile example
pt: fix warning
core: clean up dll logic
remove "second tracker" support

Was always a kludge.
nix spurious warning
remove obsolete axis selector from trackers
win32: all plugins in Windows binary distro updated to new api
pt: remove verbose comment
nix spurious warning
udp: cleanup, reduce mtx contention
nix looooong copyright notices now that they don't apply
add gitattributes