v0.4.1

IMPROVEMENTS

• Now restrictions defined by flag 'tables' or CLICKHOUSE_SKIP_TABLES will be also applied for metadata (#43)
• S3 part was rewritten on non-blocking pipes. It allowed to execute reading from disk, compression and uploading simultaneously.
• Library mholt/archiver was updated to version with multi-threading 'gzip' support and now 'gzip' has been selected as compression format by default (#14)

Comparison table of upload 31GiB data with v0.4.0:

+------+----------------+----------------+
|      |     v0.4.0     |     v0.4.1     |
+------+----------------+----------------+
| tar  | Time: 8m14s    | Time: 7m50s    |
|      | Size: 30.8GB   | Size: 30.8GB   |
+------+----------------+----------------+
| lz4  | Time: 22m50s   | Time: 15m15s   |
|      | Size: 24GB     | Size: 24.5GB   |
+------+----------------+----------------+
| gzip | Time: 13m21s   | Time: 6m54s    |
|      | Size: 21GB     | Size: 24.2GB   |
+------+----------------+----------------+