Stetl

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See https://github.com/geopython/stetl/issues?q=milestone%3A%22Version+1.0.9%22+is%3Aclosed

Highlights:

- Substitutable config options in properties file (-a arg)
- Docker support via Stetl Docker image
- Generic ogr2ogr Input Component enhancement

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See https://github.com/geopython/stetl/issues?q=milestone%3A%22Version+1.0.8%22

- generic OgrOutput component
- Apache Log File Input

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- start of Stetl Format conversion Filter
- generic OgrInput component
- SQLite Input component
- BAG to INSPIRE Addresses example with Jinja2 Templating Filter
- Jinja2 Filter refinements

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- allow spatial_extent in OGROutput Top10NL example
- httpinput more robust
- Packet: new type 'record', as Python dict structure
- httpinput: ApacheDirInput, input data from Apache index listing
- dboutput: PostgresInsertOutput, insert single record into Postgres
- component: add before_/after_invoke and after_chain_invoke() for intercepting
- filters: start of Python Templating filters: simple string and Jinja2 templating
- Packet: new type 'struct' basically a free form dict, the result of reading CSV
- input: CSV file input
- new examples: 9_string_templating and 10_jinja2_templating
- start stetl --doc option to print class configuration info
- config: start of adding meta attribute config info via class vars of type Attr

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- cater for strange lxml parse error: https://bugs.launchpad.net/lxml/+bug/1185701
- more Dutch BGT (large scale topo) examples by thijsbrentjens

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- more documention
- Dutch BGT (Basis Registratie Grootschalige Topografie) example
- Ordnance Survey Mastermap example
- strip XML namespaces option to XmlElementStreamerFileInput