fix KroneckerDelta not canonical (issue 3479) and added new test
fix KroneckerDelta not canonical (issue 3479) and added new test
try to fix issue 3479 with new return value when two inputs are in wrong order and change test_latex
try to fix issue 3479 and edit test cases
attempt to fix issue 3479 with min( , default_sort_key) and edited test cases
attempt to fix issue 3479 with min( , default_sort_key) and edited test cases
attempt to fix issue 3479 with min() and test cases
Merge branch 'issue3479_trial2' of https://github.com/bgee/sympy into issue3479_trial2
Merge pull request #1869 from bgee/issue3479_trial2

KroneckerDelta now canonical (issue 3479)