Xxh-xxh

**xxh**
* New `+heb` argument to set pre execution code

**xxh-shell-zsh**, **xxh-plugin-zsh-ohmyzsh**
* Full reinvention of environment variables transporting from local to remote host. Now it is works as natively as possible.

**xxh**
* New seamless mode support for xonsh. Now you can run `source xxh.xsh myhost` and all environment variables which you liste in `xxh-shell-xonsh-appimage/env` file will be on host.

**xxh**
* The big step forward in seamless mode. New `source xxh.zsh myhost` command for zsh allows to pass the environment from local to remote host. If you're using Oh My Zsh framework it allows to pass `ZSH_THEME` and `plugins` without any manual changes. Read env part of [xxh-plugin-zsh-sample](github.com/xxh/xxh-plugin-zsh-sample).

**xxh-shell-osquery**
* New osquery shell!

**xxh**
* New `+e NAME=VAL` argument put environment variables to the host

**xxh-shell-bash-zero**, **xxh-shell-zsh**, **xxh-shell-xonsh-appimage**
* Added environment variables support in entrypoint

**xxh-plugin-zsh-ohmyzsh**
* New env var `XXH_ZSH_PLUGIN_OHMYZSH_ZSH_THEME` (UPD: replaced to `ZSH_THEME` in 0.5.5)
* New env var `XXH_ZSH_PLUGIN_OHMYZSH_PLUGINS` (UPD: replaced to `plugins` in 0.5.5)

**xxh**
* New `+q` quiet mode
* Added example to config.xxhc
* Added details to messages

**xxh-shell-bash-zero**
* Fix loading plugins

**xxh-plugin-bash-vim**
* Fork-ready vim plugin for xxh-shell-bash-zero

**xxh**
* New logic: by default xxh will use your shell (xonsh, zsh or fish)
* New logic: by default xxh will upload plugins to host only for chosen shell (reduce overhead)

**xxh-dev**
* Added retries for tests