Changed a few things

* Integrated # and ~ decorators into the expression system. Created associated operators.
* # and ~ decorators only affect their current line. That's more useful...
* Fix our priority system to evaluate left-to-right instead of right-to-left (if there was a reason why I did it this way initially, I don't remember it so ¯\_(ツ)_/¯)
* a lotta internal changes

Various other small adjustments, see the diff of REFERENCE.md for details.

test/tests/subtext.lua

@@ -0,0 +1,86 @@
+local _={}
+_[33]={1,[3]=3}
+_[32]={1}
+_[31]={}
+_[30]={1,2}
+_[29]={}
+_[28]={5}
+_[27]={}
+_[26]={}
+_[25]={5}
+_[24]={}
+_[23]={tags=_[31],text=" to jump."}
+_[22]={tags=_[32],text="-"}
+_[21]={tags=_[33],text="button"}
+_[20]={tags=_[32],text="-"}
+_[19]={tags=_[31],text="Press "}
+_[18]={tags=_[29],text="to jump."}
+_[17]={tags=_[30],text="A "}
+_[16]={tags=_[29],text="Press "}
+_[15]={tags=_[27],text=" to jump."}
+_[14]={tags=_[28],text="A"}
+_[13]={tags=_[27],text="Press "}
+_[12]={tags=_[26],text="to jump."}
+_[11]={tags=_[25],text="A "}
+_[10]={tags=_[24],text="Press "}
+_[9]={_[19],_[20],_[21],_[22],_[23]}
+_[8]={_[16],_[17],_[18]}
+_[7]={_[13],_[14],_[15]}
+_[6]={_[10],_[11],_[12]}
+_[5]={"return"}
+_[4]={"text",_[9]}
+_[3]={"text",_[8]}
+_[2]={"text",_[7]}
+_[1]={"text",_[6]}
+return {_[1],_[2],_[3],_[4],_[5]}
+--[[
+{ "text", { {
+      tags = {},
+      text = "Press "
+    }, {
+      tags = { 5 },
+      text = "A "
+    }, {
+      tags = {},
+      text = "to jump."
+    } } }
+{ "text", { {
+      tags = <1>{},
+      text = "Press "
+    }, {
+      tags = { 5 },
+      text = "A"
+    }, {
+      tags = <table 1>,
+      text = " to jump."
+    } } }
+{ "text", { {
+      tags = <1>{},
+      text = "Press "
+    }, {
+      tags = { 1, 2 },
+      text = "A "
+    }, {
+      tags = <table 1>,
+      text = "to jump."
+    } } }
+{ "text", { {
+      tags = <1>{},
+      text = "Press "
+    }, {
+      tags = <2>{ 1 },
+      text = "-"
+    }, {
+      tags = { 1,
+        [3] = 3
+      },
+      text = "button"
+    }, {
+      tags = <table 2>,
+      text = "-"
+    }, {
+      tags = <table 1>,
+      text = " to jump."
+    } } }
+{ "return" }
+]]--