refactor(hmpl,hectic): warnings

package/c/hmpl/README.md

@@ -0,0 +1,82 @@
+## interpolation tag
+context
+```json
+  {
+    "name": "Ioan", 
+    "person": { "name": "Oleg" }, 
+    "family": {"person": { "name": "Taras" }}, 
+  }
+```
+
+template
+```hmpl
+  {{name}}
+  {{person.name}}
+  {{family.person.name}}
+```
+
+result
+```hmpl
+  Ioan
+  Oleg
+  Taras
+```
+
+## section/iteration tag
+context
+```json
+  {
+    "person": {"name": "persons"},
+    "persons": [
+      {"name": "Ioan", "number": 2}, 
+      {"name": "Oleg", "number": 1}, 
+    ]
+  }
+```
+
+template # raise_exception
+```hmpl
+  {{#{{person.name}} p}}
+    {{p.name}} is {{p.number}}
+  {{/persons}}
+```
+
+result
+```hmpl
+  Ioan is 2
+  Oleg is 1
+```
+
+## include tag
+json
+```json
+```
+
+template
+```hmpl
+  {{>template_name}}
+```
+
+result
+```hmpl
+```
+
+## Order
+used plain render
+interpolation->section->include
+
+so you cannot render interpolation in interpolation or section
+
+Not allowed:
+```hmpl
+{{name_{{subname}}}}
+{{#array_{{subname}}}}
+```
+
+But:
+```hmpl
+{{>{{template_name}}}}
+```
+allowed;
+
+№ эксепшн на нераскрытые