bumped version to 3.1.0

updated vendor url to use archive to not break in future

bumped version to 2.6.6

bumped version to 2.6.5

updated dependencies

Merge branch 'master' of github.com:shebinleo/pdf2html

version bump: 2.6.2 fixes #23

version bump: 2.6.1 fixes #20

version bump: 2.6.0 fixes #5 #6

2.5.0