expr: add Like operation
python: compute like
sql: like
mongo: like operation
pandas: compute like
Test for mongo multiple columns
Implement mongo multiple columns
Use numpy ufunc logical_and.reduce for pandas like
Revert "Implement mongo multiple columns"

This reverts commit e7bb20fcda3d839a16ea4efb1616aebe3ec3851f.
Add failing test for when the world improves
Not xfailing on mulitple matches anymore
Make sure we don't match like the $text operator
Use $regex to implement Like for MongoDB
Remove has_text_index
spark: like operation
add like to comprehensive test suite
Fix typo
Enable text search in mongo travis
Merge pull request #612 from cpcloud/mrocklin-like

Like Expression