modular system for source code

[mterber]

Is your feature request related to a problem? Please describe. Today, the entire source code of a Blech program resides in a single *.blc file. This

• reduces the clarity of the code (even for small projects)
• provides only a single name space for all functions, activities, etc.
• makes it hard to separate concerns

Describe the solution you'd like I would like to be able to separate my Blech code into different source files and to import / include them if required. Example:

// @file: spi.blc - Everything related to SPI communication.
module spi
activity rxTxBytes(...)
...
end

// @file: rf.blc - Everything related to RF communication.
import spi
...
run spi.rxTxBytes(...)
...

[schorg]

Module system will be released in Version 0.7.0