Merge branch 'release/0.3' into develop
Error handling
Shell - wip
Shell - wip
Shell - wip
First commands
Add empty command functions
Format usage
Move help command to its own file
Initial lexer from 'text/template/parse/lex.go'
Code format
Command struct - wip
Introduce readline
Command struct
Packages, packages, packages
Move code from main to model package
Move code from main to model package
Command formatting
Merge branch 'feature/lexer' into develop
Bump to 0.4