Merge pull request #16 from cjmach/develop

Release v1.9.0.

Release v1.8.1

Release v1.8.0

Tag for version 0.7.0.

Increment version.

- Use ISO-8859-1 as default charset, inlined with pstconv defaults.

- Prevent NPE.

Upgrade library dependencies.

Improve documentation.

Merge pull request #5 from cjmach/develop

Release 0.3.0

Merge pull request #4 from cjmach/develop

Release v0.2.0

Merge pull request #2 from cjmach/develop

Sync branches