Release 1.0.0b24

User visible changes in this release:

• A new mechanism for creating 3D models programmatically using !model vertices=... faces=...
• !sdf node now accepts the same smooth=, fillet= and chamfer= attributes as !union (since it is an implicit union operator)
• A fix to nearest=true shader input sampling, which was accidentally disabling the border settings
• New grammar for sub-vector searching: x in y (note that this has subtly changed the rules around using "reserved" names)
• New grammar for binding a sequence expression to a name:

  let x = 
      expr1
      expr2
      ...
  

• The precedence rules have changed for anonymous functions so that they now bind a bit less tightly and thus can contain inline for loops, where clauses and other anonymous functions without parentheses
• New product() function
• New optional second parameter for colortemp() function that specifies whether to normalise the luminance of the returned colour or not
• New uv_remap=:plane UV remapping scheme for topographical mapping

Less visible changes:

• The 3D model caching framework has been changed to cache based on a (probably-)unique 64-bit identifier instead of the user-readable name; this increases the speed of model collection and will be particularly noticeable if rendering thousands of identical structured models
• A more robust mechanism for figuring out which outer-scope names a function is capturing
• The simplifier will now attempt to inline calls to recursive functions if any of the arguments are literal; it will abandon the attempt if the expression tree becomes too deep
• The simplifier is now able to throw away unused let bindings
• The simplifier has gained rules for collapsing mathematical expressions involving a null on one side
• Grammar rules around comparison operations have changed in a way that shouldn't matter unless you were doing weird/bad things with them before
• A bunch more tests
• A bunch of documentation improvements and fixes

Full Changelog: v1.0.0b23...v1.0.0b24