Fix incorrect encoding by forcing UTF8MB4 on CSV LOAD

* add sprintf

* Fix: add CHARACTER SET utf8mb4 to LOAD FILE SQL.

Add iterated rows count logging.

Add source rows count query logging.

Add reader result set size logging.

Add `Literal/1` function to anonymisation environment, fix prefixes f…

…or mirroring.

Add view dumping capabilities.

Adds support for conditional anonymisation of columns. (#1)

* Adds support for conditional anonymisation of columns.

* Improve README.md

Merge pull request hellofresh#96 from hellofresh/hotfix/small-improve…

…ments

Fix typo and improve error handling

improve docs

introduce matchers config