v0.9.25

Merge pull request #81 from j0k3r/patch-1

Package tecnick.com/tcpdf is abandoned

Indirect recursion detection in xObjects

Merge pull request #67 from aik099/circular-object-references-v2

Indirect recursion detection in xObjects

Memory fixes

v0.9.23

Merge branch 'mc-comanescu-master'

v0.9.22: Fix infinite loop

Fix infinite loop and memory overload.

Bugfix on getFonts

Merge pull request #41 from scotam/issue-33

Fix for Object classes returned as Fonts