- avoid to use unzip of incompatible busybox version
- don't show bta libraries by default
- add disabled patches for crosstool-ng (you can enable it when you need it) to support gcc 10.2.0 and binutils 2.35
- introduce S3TUP_CONFIG_VERSION to detect newer config file template
- revert make install_sw to make install_ to fix build errors on some OPENSSL versions
- new cross toolchain template for FRITZ!Box 7590 and other GRX models Release 7.2x
- integrate use of toolchains from Android Native Development Kit (NDK)
- add new cross toolchain template for Android 7.0 Nougat STBs
- rewrite/optimze config file generation code and introduce a config template file to avoid unmaintainable code
- add new libraries for toolchain integration (CCID IFD Handler 1.4.33, libusb 0.1.12)
- update language files