travis: Update Python versions

Stop testing on unsupported Python 3.3

Drop Python 3.3 which isn't available anymore, add python 3.7 and 3.8 instead.

Add signature/decryption support for PGP RSA encrypted session key

Added PKCS#7 Object signature

deps.sh: use new upstream cramfs-tools

Update binarch with AArch64 instructions

Remove conflicting signature for flattened device trees

make API example python3 compliant

Adding version into sdist

Fixed issue with next_target_file being unicode and causing an exception

Updated EXT signature to detect and skip to the end of the EXT image

`s/Not/not`

fix getting user's home dir

When running binwalk in non-interactive session some env variables
may not be set. This causes binwalk to fail to correctly determine
user's home directory. This commit fixes that (at least for linux systems).

Version 1.1 of cramfs does not build anymore with glibc 2.28 because
since this version glibc no longer includes <sys/sysmacros.h> from
<sys/types.h>, and therefore <sys/sysmacros.h> must be included
explicitly when major()/minor() are used.

To fix this issue, use new upstream project which includes
https://github.com/npitre/cramfs-tools/commit/434aabd67a39165ee0750c0e0d25213bf2ec8fa5

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Fixed file path bug in extractor.py where file names that are all digits were treated as integers rather than strings

Fixed some ROM signature and extraction bugs; added debug info during file open failures; updated plugins to use file.path instead of file.name

Add signature of flattened device trees

Signed-off-by: Tobias Schramm <tobleminer@gmail.com>

Added {end} tag to ISO signatures to prevent scanning inside of the ISO image and producing duplicate extractions