Improve balance command performance when multiple pubkeys are specified

Make it go faster.

Once #161 (closed) will be solved, try to request every pubkeys tx sources and history at the same time.

changed milestone to %0.8.0

added ~252 enhancement labels

changed title from Improve balance with several pubkeys performances to Improve performances of balance command with several pubkeys

changed title from Improve performances of balance command with several pubkeys to Improve balance command performances with several pubkeys

changed milestone to %0.9.0

changed milestone to %0.10.0

added Money label

changed milestone to %0.11.0

changed the description

changed milestone to %0.10.0

added API: GVA label

marked this issue as related to #175 (closed)

mentioned in issue #175 (closed)

assigned to @moul

changed milestone to %0.11.0

changed title from Improve balance command performances with several pubkeys to Improve balance command performance with several pubkeys

unassigned @moul

removed API: GVA label

changed milestone to %Backlog

added TBR label

changed title from Improve balance command performance with several pubkeys to Improve balance command performance when multiple pubkeys are specified