Cleanup

v2.1.3

cleanup & improve isvalid_test.go

add more tests

v2.1.2

add more tests

fix error handling

v2.1.1

fix error handling in encoder

remove clbanning/mxj dependency

v2.1.0

remove dependency on clbanning/mxj

Fix test error message.

v2.0.1

fix test

Enable checking validity of encoded XML.

Requires github.com/clbanning/mxj/v2.

Handle nil maps and map values gracefully.

v1.2.2

address issue #3 and #4

fix vet complaint for go v1.10

v1.2.1

fix vet complaint with go v1.10

Patch nil encoding.

1.2

Apply nil encoding patch from clbanning/mxj.

Initial

Add a version tag for those who use it.