doc UPDATE mention API bin value removal

Author: michalvasko

doc/transition_4_5.dox

@@ -34,7 +34,8 @@
  * lyd_new_ext_path()           | -                                | ^
  * lyd_new_ext_term()           | -                                | ^
  * lys_getnext_ext()            | -                                | ^
- * lyd_validate_ext()           | lyd_validate_ext()               | Function remained but should be used only by extension plugin callbacks. For ext data validation standard functions should be used.
+ * lyd_validate_ext()           | lyd_validate_ext()               | Function remained but should be used only by extension plugin callbacks. For ext data validation the standard functions should be used.
+ * lyd_new_term_bin()           | lyd_new_term() with ::LYD_NEW_VAL_CANON | Binary format of values required special considerations and was prone to errors. Using the canonical string value should have similar efficiency because it always had had to be generated from the binary values. |
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  *
  * The complete generated list of changes (without any additional notes) can be found in