Blender 2.93.4

What's new in this version:

- VSE: Flush audio encode after finishing video export
- FFMPEG: Fix building with older versions that need FFMPEG_USE_DURATION_WORKAROUND
- VSE: Fix “off by one” error when encoding audio
- VSE: Fix memory leak when adding bad image/movie strips
- VSE: Fix video strip duration calculation
- VSE: Fix seeking issues
- VSE: Fix audaspace not reading ffmpeg files with start offset correctly
- VSE: Use lines to draw waveform
- M2T video seeking is broken
- Add sanity NULL checks when loading sound sequences
- wrong address to get boost libraries in /build_files/build_environment/install_deps.sh
- Effect Strip added to a nested Metastrip gets duplicate name (thus inherits fcurves from other Strips)
- Memorie spike shrink-wrap and geometry nodes
- Fix: DNA struct alignment on 32 bit
- Makesdna: Fix detecting 32 bit padding issues
- Fix FTBFS on mips64el architecture
- Fix memory leak with building springs in the cloth simulator
- Knife project leaks memory each time a text, curve, or surface object is used for cutting
- Grease Pencil layer transformations ignored by select tool
- Fix memory leak in edit-mesh dissolve degenerate
- Scale to Fit overflows into a second line
- Memory leak after importing a model/ toggling shading workspace
- ASAN: Trying to Undo a knife-project operation causes heap-use-after-free failure
- blender 2.93.1 fails to build with python 3.10.0b4 (upcoming python 3.10)
- Incorrect result of Vector Projection (Geometry Nodes -> Attribute Vector Math)
- Grease Pencil Reproject Strokes on surfaces from a camera’s point of view is incorrectly placing the strokes on the Back Faces when canvas is intersecting the object
- Something in Blender can generate invalid (Nan) values in UVMaps
- Blender Crashing when opening file
- bpy.types.Object.parent_bone not reset when clearing a bone parent
- UI bugs in NLA Editor and Action Editor
- Animation channels widgets (graph, action, NLA, *dopesheet*) block input for the search channel, and invert search toggle