* Enhancement: Prefixed all the installed binaries and scripts with `retdec-` ([#70](https://github.com/avast-tl/retdec/issues/70)). Also, some tools were renamed to make their names more uniform.
* Enhancement: Got rid of all git submodules ([#92](https://github.com/avast-tl/retdec/issues/92), [#93](https://github.com/avast-tl/retdec/issues/93)). Moved sources of all RetDec-related repositories to this main repository. Third-party dependencies are downloaded and built via CMake's external projects. This allows us to have e.g. only a single copy of LLVM ([#14](https://github.com/avast-tl/retdec/issues/14)) and not require a recursive clone ([#48](https://github.com/avast-tl/retdec/issues/48), [#68](https://github.com/avast-tl/retdec/issues/68), [#72](https://github.com/avast-tl/retdec/issues/72)).
* Enhancement: Set a proper `rpath` during installation on Linux and macOS ([#77](https://github.com/avast-tl/retdec/issues/77), [#100](https://github.com/avast-tl/retdec/issues/100)). This allows us to move the installation directory after the installation into another location.
* Enhancement: Decrease the default timeout when downloading the support package during installation ([#6](https://github.com/avast-tl/retdec/pull/6)).
* Enhancement: Any shell can be used to install the decompiler, not just Bash.