Merge pull request #16 from unok/i-erdm-15

#erdm-15  The flag of the unique constraint of index is reversed

modified HTML Template

#erdm-13 Add column expression not displayed in ER diagram

fixed html template not null attribute.

fixed html template not null attribute.

Merge pull request #12 from unok/i-erdm-11

#11 fixed

#erdm-10 Delete logical name mandatory constraint

fixed #6, #7

Merge pull request #5 from unok/erdm-4

#4

Merge pull request #3 from unok/erdm-2

erdm-2 parse error for relation information