Fixed #55 : DefConceptParser: failed to recognize concept

Fixed #62 : DefConceptParser: parsing error
Fixed #64 : DefConceptParser: Failed to parse when too many concept keyword
Fixed #65 : DefConceptParser : Add auto_eval keyword
Fixed #66 : DefConceptParser : Add def_var keyword
Fixed #67 : Add get_errors()

sheerka_backup/adjectives.sb

@@ -2,9 +2,9 @@
 push_ontology("english")
 
 def concept adjective
+
 def concept color
 set_isa(color, adjective)
-
 def concept red
 def concept blue
 def concept orange
@@ -31,5 +31,14 @@ set_isa(black, color)
 set_isa(white, color)
 set_isa(grey, color)
 
+def concept size
+size is an adjective
+
+def concept tall
+tall is a size
+def concept short
+short is a size
+
+
 def concept qualify x from bnf adjective x as set_attr(x, c:adjective:, adjective) ret x
 def concept qualify x from bnf x 'is' adjective as set_attr(x, c:adjective:, adjective) ret x