* arbitrary limit (1024 bytes) per line - reading lines of arbritrary length is difficult and will be seldomly used
 * introduced is_newline() helper function

 * also made gtk_experiment_transcript_free_formats() an internal function
 * declare static functions in gtk-experiment-transcript-formats.c

default interactive format attributes may be NULL (i.e. don't change these attributes) but pango/gdk free functions cannot handle NULL pointers gracefully
 * only results in assertions now since windows are explicitly destroyed (the info window was not destroyed at all previously)

removes some constraints on resizing the info window containing the widget
(however other widgets have minimum sizes preventing the transcript area being squashed together)

also required stripping trailing newlines when processing "format" files since "format" files only worked because the newline was part of the "format" expression and ignored

 * ensures that the fullscreen window will be on the correct screen (for some reason it was already displayed on the correct screen)
 * ensures that the toplevel window (i.e. the player window) cannot be put above the fullscreen window (this was already ensured by keeping the fullscreen window above all other windows)

this causes issues on Linux and is not necessarily required