[backport-release] v1.1.2

This release backports bugfixes from v1.2.0.

Bugfixes

• [a0574b7] vm::call_function() now properly compiles when building a shared library.
• [6adfc90] The camera_trajectory enum now contains the correct enum value for camera_trajectory::object.
• [efe212a] Added support for semicolons in model script source files.
• [b55206c] The buffer now no longer segfaults when loading empty files.
• [89bb243] When reading a line at EOF, the buffer no longer throws an exception, but rather returns the empty string.
• [5d8b511] light_preset and light VObs now correctly support greyscale color transitions.
• [4b512fa] Parsing of model scripts now features improved compatibility for modded installations.
• [090dc1b] For compatibility with mods, values of Daedalus string symbols are now parsed using a special algorithm
  to avoid data corruption.