The following command would upgrade the older version of pg_bigm to 1.2.
ALTER EXTENSION pg_bigm UPDATE TO '1.2';
Add pg_gin_pending_cleanup function (Fujii Masao)
Support triConsistent method for better performance (Fujii Masao)
The triConsistent method makes the full-text search using pg_bigm much faster especially when a long search phrase is used
Add the information about the available text search operators into the comparison table of pg_trgm and pg_bigm in the document (Fujii Masao)
Make pg_gin_pending_stats function check whether the given relation is a GIN index (Fujii Masao)
Add the limitations section into the document (Beena Emerson, Masahiko Sawada)
Increase the maximum size of the column indexed by pg_bigm GIN index from 43MB to 102MB (Beena Emerson)
Fix possible overflow in calculations of memory allocation request sizes (Fujii Masao)