v0.2.0

Changes:

• Added a -v|--version command line option.
• Tabs in FAUST C/C++ code are replaced with four spaces in default templates.
• Improved whitespace output in default templates.
• Added getter function for parameter tooltip/description in default templates.
• Updated manual HTML export

Fixes:

• Updated Nim wrapper code template.
• Fixed package path stripping for template path resolution.
• Fixed some wrong template placeholders in generic.c template.
• Fixed parameter group symbols as by making sure they are valid identifiers.
• Fixed minor readme issues