Merge pull request #209 from skitt/export-errs-v5

Export errBadJSONDoc and errBadJSONPatch errors

Upgrade go-flags

Merge pull request #202 from evanphx/f-html-escape

Add option to control if the output is HTMLEscaped

Use a type alias for RawMessage to avoid breaking the public API of O…

…peration

Merge pull request #197 from evanphx/f-perf

Improve performance

Merge pull request #158 from erickertz/master

Fix panic on test op

port over fix for testing/replacing a whole document to v4

Handle applying to the whole doc. Fixes #142

Remove go.mod because I guess I do'nt know how go modules work still

Merge pull request #141 from kacejot/preserve-nulls

MergeMergePatches preserve nulls in complex objects