fixed null pointer and index out of bounds exceptions - added issue reference
- Macros are called too often if included multiple times
- Fix potential null pointer exception in PebbleException (#243)
- Fix for accessing map via primitive (#196)
-- Fix for null pointer and index out of bounds exceptions when invalid or no endif/endfor tags are used in template
+- Fix for null pointer and index out of bounds exceptions when invalid or no endif/endfor tags are used in template (#266)
## v2.3.0 (2016-11-13)
- Upgrade SLF4J from 1.6.1 to 1.7.21
