v8

Backported commits from pandemonium:

• Now unicode error printing is disabled by default. Also can be enabled
  via a macro. 2e41d4dfcda7ff2c35a1326f0de71b0714524f11
• Added to_real helper methods to String.
  43b14a071c6ccf7c3062e0568e3d7bb05d8a83d2
• Fix AABB.encloses failing on shared upper bound.
  8341ddc450bd160b5cb44eeb0400da2e5a151ed0
• Fix incorrect clipping in String::substr_index().
  dcd00dec81a2841ad5244e043379697c68d681f7
• Backported create_reference() helper methods for InputEvents from
  godot 4. 4cdb1636264d8a6cef0881a37a7fad72ac262f3f
• Backported comparison operators to Array from godot4.
  7779439e284bf8a0534f606d5c7f929674764941
• Removed Vector2i(Vector2) constructor, added a Vector2i conversion
  operator to Vector2 instead. This solves ambigous Variant to Vector2i
  conversion errors. 27b73fa9f9984709b0c8eb77bfeea5cab8d9fee3
• Added exp2 to the Math singleton.
  e17cc864bc339c1f4d1ce6acd4cabf4a6593c6cc
• Add a get_or_add method to Dictionary.
  487b454506259c080306098093875ea7bda5b5ad
• Add is_zero_approx methods to Vector{2,3}
  441bb29fd3bd758ff783e4122e6b2d512dc8529f
• Also add is_zero_approx() to Vector4.
  ed224298e5ae951093b42a004afacbd275e54494
• Transform now uses Basis::create_looking_at.
  6f53257e05d72088c28028eb568526f4da146ae0
• Backported from godot4: Add the ability to look-at in model-space.
  951ae7b11db0376dd0dbdf080e2f2e3652ac33ed
• Fix split_floats behavior when spaces are used as separators
  4585110a298487081f026827e3395c4feaf35f9a
• Better solution for the previous fix.
  d75d3591edf13ae0dd6aa989962595aa1280ae73
• Fix the fix. 48935e93b3f5849a52b0e7fc0b6ede36a7b61123