Nominatim/Version2

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Merge admin boundaries and place nodes (where within 2 levels of rank) (working in development version)
Modify Voronoi algorithm to take account of known fixed boundaries (in progress)
Native postgresql Voronoi
Additional per-country index to speed up searches within country - might require better county polygons in OSM?
Various problems with German postfixes / abbreviations (back ported to v1, being tested live)
Performance - indexing is far too slow. Test clustering and polygon generation to see effects
Move to hstore for name storage for compatibility
Import minute change sets so index fully up to date
Assign UUID to features. Ideally UUID should be consistent between nominatim systems! (is that even possible?!?)
Generate indexes in memory

Re-write search logic in java.
Use statistics to estimate phrase importance to improve ordering of search graph
Change all scoring functions to a 0 to 1 scale so scores can be calculated using multiple factors
Re-score strings after index search (index is lossy, we should recheck - perfect matches should beat transliterations)
Options for fallback to high level feature when low level features missing (i.e. town when street not yet present)
'Did you means' Suggestions. Can't use standard - too many words and phrases (too slow) - so:
- High level admin features only?
- Modified levenshtein btree?
- Geographic indexing of suggestions?
- Word context based indexing?
Allow detailed / structured search terms in query (i.e. query_country_code=DE&query_town=Berlin) (partial - query_country_code=[countrylist] only)
Search for amenities by tag pair (partially done)
Search graph to take account of in / nearest rather than just dropping them (partially done)
Multilingual support for nearest / in / im (possible list of words in wiki (Name_finder:Translations) (in progress)
Searching for street intersections
Provide option to use postgresql full text search module as alternative indexing method
Better formatting of address output (address format def on wiki? crowdsource?)
Indexing support for autocomplete text entry (prefix search)

Re-factor and reorganise the code - its a bit of a mess! (in progress)

Minor index change required to make this efficient, but requires complete re-index of planet (in progress)
xml interface
Visual representation of address 'graph' to help people debug

Provide export files (xml?) at various detail levels
- Structured? (in progress)
- Flat?
Provide postgresql dump file to get people started?

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