pg_ivm 1.11 released

IVM Development Group is pleased to announce the release of [pg_ivm 1.11]( https://github.com/sraoss/pg_ivm/releases/tag/v1.11 ).

Changes since the v1.10 release include:

### Bug Fixes

* Fix maintenance failure with columns whose names include capital letter (Yugo Nagata)

This bug was introduced in the previous release (v1.10). When a table has a column with
a capital letter in its name, incremental view maintenance failed because the column name
was parsed as lowercase.

* Fix build failures on Windows environments (Yuta MASANO)

Previously, the lack of PGDLLEXPORT on some functions declarations caused linkage when
building with MSVC.

* Fix potential segmentation fault in create_immv (Yugo Nagata)

A code issue caused a segmentation fault when building with MSVC, although the problem
was not observed on Linux.

### About pg_ivm

pg_ivm is an extension module that provides Incremental View Maintenance (IVM) feature.

Incremental View Maintenance (IVM) is a way to make materialized views up-to-date in
which only incremental changes are computed and applied on views rather than recomputing.
pg_ivm provides a kind of immediate maintenance, in which materialized views are updated
immediately after a base table is modified.

Source repository: [https://github.com/sraoss/pg_ivm](https://github.com/sraoss/pg_ivm)