Changed a few things

- Bumped to 0.15.0
- Add boot script
- Change variable definition syntax, using a = to distinguish more cleary between identifier and value
- Variables initial values are evaluated on first use instead of at parsing time
- Error on variable redefinition. Means you should make sure to load saves after your scripts.
- Improve string parsing, support for escape codes
- Remove support for number literals with empty decimal part (42. for 42.0) as there's no distinction in Anselme and it conflicts with .function call suffix
- Changed priority of : pair operator
- Add type type, and type annotations to variables and function parameters
- Change Lua function system to use regular Anselme functions
  - Defining a function from Lua is now way simpler and require providing a full Anselme function signature
- Change Anselme function system
  - Dynamic dispatch, based on arity, type annotation and parameter names. Will select the most specific function at runtime.
  - Define way to overload most operators
  - Allow custom type to text formatters
  - Allow assignment to custom functions
  - Index operator ( renamed to ()
  - Functions with parameters each have their own private namespace (scoping ersatz)
  - Internal: "custom"-mode operators now have their own expression AST type instead of cluttering the function system
- Remove static type checker as it is barely useful with new function system. May or may not rewrite one in the future.
- Improve error messages here and there
- Internal: cleaning

test/tests/string escaping.lua

@@ -0,0 +1,38 @@
+local _={}
+_[17]={}
+_[16]={}
+_[15]={}
+_[14]={}
+_[13]={data="escaping expressions abc and stuff \\ and quotes \"",tags=_[17]}
+_[12]={data="other codes \n \\ \9",tags=_[16]}
+_[11]={data="quote \"",tags=_[15]}
+_[10]={data="expression a",tags=_[14]}
+_[9]={_[13]}
+_[8]={_[12]}
+_[7]={_[11]}
+_[6]={_[10]}
+_[5]={"return"}
+_[4]={"text",_[9]}
+_[3]={"text",_[8]}
+_[2]={"text",_[7]}
+_[1]={"text",_[6]}
+return {_[1],_[2],_[3],_[4],_[5]}
+--[[
+{ "text", { {
+      data = "expression a",
+      tags = {}
+    } } }
+{ "text", { {
+      data = 'quote "',
+      tags = {}
+    } } }
+{ "text", { {
+      data = "other codes \n \\ \t",
+      tags = {}
+    } } }
+{ "text", { {
+      data = 'escaping expressions abc and stuff \\ and quotes "',
+      tags = {}
+    } } }
+{ "return" }
+]]--