Co-authored-by: NLevi Bowman <lbowman@trace3.com>

* chore(cairo): maven build refactoring

Fixed javadoc issues too. Created profiles for binary build, central release and web console build

* chore: updated readme and contribution guide to reflect build changes

* chore: consistent messaging

* chore: updated docker files, that build from source

* chore: circle ci also builds from source

* chore: spelling
Co-authored-by: NMéril <meril.pilon@gmail.com>

* chore: improved spelling [skip ci]
Co-authored-by: NMéril <meril.pilon@gmail.com>

* chore: improved spelling [skip ci]
Co-authored-by: NMéril <meril.pilon@gmail.com>

* chore: improved spelling [skip ci]
Co-authored-by: NMéril <meril.pilon@gmail.com>
Co-authored-by: NMéril <meril.pilon@gmail.com>

Bumps [bl](https://github.com/rvagg/bl) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/rvagg/bl/releases)
- [Commits](https://github.com/rvagg/bl/compare/v4.0.2...v4.0.3)
Signed-off-by: Ndependabot[bot] <support@github.com>
Co-authored-by: Ndependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

feat(griffin): insert statement accepts timestamp as string in both micro- and milli formats. (#574)

Fixed #468

following reported issue with Java 11 on OSX producing error:
```
JAVA: /Library/Java/JavaVirtualMachines/jdk-11.0.8.jdk/Contents/Home/bin/java
Invalid -Xlog option '-Xlog:gc*,gc+ref=debug,gc+heap=debug,gc+age=trace:file=var/"questdb"/log/questdb-%p-%t.gc:tags,uptime,time,level', see error log for details.
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
```

Added check for RecordCursor.size() regression

do not drop table unless trailing tokens are as expected

feat(griffin): added count(string), count(symbol) and count(long256). Also added rnd_long256(count) (#556)

Fixed "mask" values in all of hash tables. This was casing keys to be poorly distributed across arrays forcing high number of key collisions. I also created Long256HashSet and fixed a bug in SelectedRecord to do with addressing long256 column. All of that is tested.

This change deals with issues around protocol mechanics, in particular our responses to messages from the client on simple and extended mode.

For example:

- we now wait for sync message to send reply back, therefore grouping replies. This means that if client sends messages: P/B/D/E/S, we now send one reply back with 1/2/T/D/C/Z. This means that there is less chatter on the wire because 1. we are sending less messages and 2. the client does not get confused and therefore send less messages.
- for each message sent by client, we send an acknowledgement back
- stop sending spurious messages
- named prepared statements are cached on parse and we correctly bind parameters when receiving named statement on the Bind and Describe messages
- when executing 'select', we now send back the number of returned rows
- when executing 'set', we now send correct query tag (SET)
- for empty queries, we reply back with correct message type
- for queries with no data, we reply back with 'no data' message type
- row description now includes column number
- row descriptions attempts to populate type size and type modifier

fix(griffin): fixed issues with long NULL converting to double NULL. Also fixed group-by validation logic to deal with clauses more systematically. Fixed #540 (#545)

A new implementation of virtual memory that resizes a single page rather than using a list of pages that do no resize. This implementation includes support for memory mapped page resize.

Overall single memory page method improves performance for both read and write, also making data framing much easier

I also fixed a problem, raised by users, where uploading "bad" timestamp in CSV would result in exception and perceived curl hang (no response from server)