Typo fix - = instead of ==
Added comment block at the beginning of gswe-types.c
Fixet protector definition in gswe-types.h
Added GSWE_MOON_PHASE_NONE as a new Moon phase

!!!ABI BREAKAGE!!!
Renamed gswe_headers to gswe_enum_headers for better understanding
Made swe-glib-sections.txt versioned.
Outsourced GsweMoonPhaseData to its own sources

This messed up documentation, still checking why
Added version.xml.in to EXTRA_DIST in docs/references/swe-glib