On statement and other fixes (version 0.0.47)

[eglekaz]

Fixes for:

• VAR statements outside the method raise errors #102
• Use of BUFFER as a parameter type results in a parsing error BalticAmadeus/OpenedgeAblFormatter#296
• Parse no-error at the end of an assign statement BalticAmadeus/OpenedgeAblFormatter#322
• CASE-SENSITIVE not parsed in DEFINE TEMP-TABLE statement BalticAmadeus/OpenedgeAblFormatter#326
• STREAM-IO throws an error BalticAmadeus/OpenedgeAblFormatter#160
• RCODE-INFORMATION gets parsed as an error BalticAmadeus/OpenedgeAblFormatter#247
• NEW identifier not being parsed BalticAmadeus/OpenedgeAblFormatter#147
• DYNAMIC-NEW does not get parsed correctly BalticAmadeus/OpenedgeAblFormatter#282
• Not all parts of Temp-table definition are parsed correctly BalticAmadeus/OpenedgeAblFormatter#331
• Allow temp-table indexes to have multiple options (as per: https://docs.progress.com/bundle/abl-reference/page/DEFINE-TEMP-TABLE-statement.html)
  And other small fixes.

[eglekaz]

Hi @jkbz64 !
Please review this, when you have time