R57.A4 fix memory leak

Fixes a memory leak (thanks @Nuevo009), and also allows vsp_text frame property to be str or bytes.

res = ...
res.akarin.Tmpl("vsp_text", "text shown in vsp status area: matrix = {{x._Matrix}}").set_output()

Requires latest https://github.com/AkarinVS/vapoursynth-plugin/releases/tag/v0.96.

R57.A3 release

allowing custom text to be displayed in status line.

last.std.SetFrameProps(vsp_text=lambda f: '%s' % f.props).set_output()

Requires vs-c R57.A5.

R57.A2 release

R57.A2

R55.A0 Release for VS and VS-Classic R55

This release is for VS and VS-Classic R55; of course, it also works under VS R54.

It requires the akarin.Expr filter (lexpr): https://github.com/AkarinVS/vapoursynth-plugin/releases/tag/v0.75b.
(No need to install the dlisr specific DLL or NVidia VFX SDK if you don't need those filters.)