Fix #381 part 2

On rare occasions, page rendering and text extraction caused interpreter segmentation faults.
When fonts on a page (illegally) were meeting all of the following conditions:

1. a non-UTF8 encodable name
2. not embedded in the PDF
3. using Identity-H / Identity-V ancoding

Then MuPDF reacted with appropriate warning messages (which are intercepted by PyMuPDF).
In prior versions, PyMuPDF did not expect non-UTF8 messages and used a too "optimistic" char to unicode conversion method, which brought down the interpreter.
This has changed in the new version.

Fixing #381

also new generators for document pages and page annotations, widget and links.

Fixes #369

• significant performance improvements for dict / rawdict text extraction
• Page.getText() now support text extraction for "blocks" and "words"

Fixes #362

1.16.2

fixing #362

Fixing issues #352, #353 and #354

1.16.1

publish v1.16.1

Full PDF Password Protection

1.16.0

upload version 1.16.0

Minor Enhancements and Fixes

1.14.20

Merge branch 'master' of https://github.com/rk700/PyMuPDF

Minor fixes

• added method to check PDF signature status (#326)

Bug fix #319

1.14.18

Update README.md

Various smaller fixes

• Added method Document.fullcopyPage to make full page copies within a PDF (not just copied references as Document.copyPage does).
• Changed methods Page.getPixmap, Document.getPagePixmap to now use alpha=False as default.
• Changed text extraction: the span dictionary now (again) contains its rectangle under the bbox key.
• Changed methods Document.movePage and Document.copyPage to use direct functions instead of wrapping Document.select - similar to Document.deletePage in v1.14.16.
• The GitHub repo no longer contains interface files generated by SWIG (fitz.py, fitz_wrap.c). This allows easier tracking of inter-version source differences which is needed by providers of various Linux platforms. The PyPI source distribution still has the previous structure which includes those generated files.
• Please remember: since version 1.14.16, we store wheel files on PyPI only.