Bashbot Version 1.21

Bashbot Version 1.21 is a cleanup only release, no need to update production ... but a good time to test after cleanup.

• no new features or important bugfixes
• cleanup old stuff: documentation, messages, remove non-jssh support, remove dead code
• no more automatic download of JSON.sh after first install, see notes *
• convert echo to printf whenever possible
• more script headers with description, options and license
• review old code, e.g. send_message, send_files, upload_files
• ok, one fix: interpret only first \n when logging with log_message(),

Notes:

• Installing bashbot with a simple git clone is no more working, you must run dev/make-distrubition.sh afterwards. *
• pre 0,9 Installations (no *.jssh config) must update to version 1.20 first. *

* See Installation Instructions