Add option to explain the astronomy terms

[Deuchnord]

Is your feature request related to a problem? Please describe.
It is currently quite difficult to get the meaning of all the information given by the command, especially the astronomy terms.
There is currently a man page dedicated to this, but you have to know it exists, which is not obvious.

Describe the solution you'd like

• Delete the current kosmorro.7 manpage
• Add an --explain option that will allow Kosmorro to explain the terms shown by the current command. For instance, if the return of the command tells about a conjunction, explain what is a conjunction.
• Add support for a KOSMORRO_EXPLAIN environment variable to activate this behavior permanently.
• Proposal by @Damgermys: add a second --definitions that would list all the words like the manpage currently does. In this case, the program does not make any calculation.

Additional context
The new information should be added at least to the Plain Text output. It could be nice to get it to the PDF output too, though.

[ghost]

Hi guys, can I help with this issue?

[Deuchnord]

Yes, you can, @romco1410, feel free to create a PR :)

[ghost]

Thanks @Deuchnord, It will be fixed in 2 weeks, then ill write some tests for this also.

[ghost]

Hi @Deuchnord i have done work on this issue and before PR a want to test the written code, but none of recommendation from contributing.md works. Can you give me some hint?

[Deuchnord]

Don't worry about the tests, I'm doing a full rewrite in #209, so the Bash script will not be used anymore ;)

[ghost]

Ok theres a list of work what I did on this issue:

1. I have made new file terms.py containing terms from kosmorro.7 manpage in python dictionary, so they can be easily processed.
2. I have deleted kosmorro.7 manpage.
3. --explain option was added to list terms as you described, it supports KOSMORRO_EXPLAIN env variable as well.
4. --definitions option lists all terms same formated as manpage without any calculations.

Should I make PR to master or feature branch ?