* master:
Fix missing model error in Irr-instancing
closes https://github.com/assimp/assimp/issues/2024: make code more readable.
closes https://github.com/assimp/assimp/issues/2019: fix the qt-viewer without export.
applied coding conventions added check against the known faces
issue_2016 only add material uv mappings if set, ignore when no uvmapping set removed unneccessary pad_i1 field (to prevent unnecessary field read exceptions)
Update XFileParser.cpp
Update XFileParser.cpp
Some FBX files have Null/LimbNode attributes with an empty Properties70 element, where the Element is not NULL, but it's Compound is. The code only checked if the Element itself is NULL, thus causing a DeadlyImportError when trying to instantiate a PropertyTable for an Element that doesn't have a Compound.
fix build for independent build dir
Some review findings.
If someone configures git to always show a commit’s signing information,
this breaks the definition of GitVersion in revision.h:
```
#ifndef ASSIMP_REVISION_H_INC
#define ASSIMP_REVISION_H_INC
#define GitVersion 0xgpg: Signature faite le Fri 15 Jun 2018 20:39:53 CEST
gpg: avec la clef RSA 4AEE18F83AFDEB23
gpg: Impossible de vérifier la signature : Pas de clef publique
878b4b2c
#define GitBranch "master"
#endif // ASSIMP_REVISION_H_INC
```
This can be avoided by passing the `--no-show-signature` to the `git
log` command for retrieving the hash.
* master: (34 commits)
Update INSTALL for iOS build
Improve the contribution guide
usage of dynamic_cast instead of static_cast
prevent zero sized array allocations
reworked to ElemBase *
use of malloc and free (given to shared ptr) for correct mem management
rereworked suggested by clang
travis changes according clang 5.0
again travis hit me
changes according travis compiles
changes according travis build
changed to coding convention
issue_1973 added support for CustomData(Layer) to support multiple (texture) UV mappings added unittest with sample model
Update script.iss
replace typo by comment statement.
Update script.iss
Update script.iss
Update script.iss
Update script.iss
Update script.iss
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