26.11.5     Update session profile value area and POC more frequenty intra-bar if long duration bars are used (1% total volume change).
            update volume session profile. Include a few drawing gaurds for pixel overlaps, etc.
            harden startup to cope with NT issues and incompatibilites, making user side debugging easier.
            Remove external dependance on pjsVFI
            add VFI to data grid option
            add VFI background opacities, based on MAXVFI in historical lookback
            Fix VFI bias in Data-Analytics
            Add VFI to pjsProfilebarsPlots for external access
            Add VFI to algobars variables, standalone (current bar) and historical via VFI[x]
            tidy compiler warnings (non-critical)
            add show volume buckets, show delta buckets and show VFI to data grid right click chart context menu
            tidy delta number alignment in histogram
            Added click to scale data grid font size via icons 🗛 & 🗚 to right of data grid (if enabled)
            fix main  "Profile opacity (0-100)" setting not being correctly applied to drawn profiles
            fix delta poc show numbers on live bar highlighting more than one level on live bar
            add bold font for delta poc if delta numbers are on and show delta poc is enabled
            dyncmically scale font size inside of block trade cirlces (if enabled), to match the size of the circle, and add optional scale factor for customisation
            add non-scaling font for certain fixed font size operations so they do not scale with other chart fonts
            correctly apply vary opacity with volume values to imbalance cells
            fix bug in parenthesised algo bars expressions, i.e. (CLOSE + 2)
            add support for 'true' & 'false' in algo bars conditions
            add opacity option for algobars marker colouring, and chart background
            update algobars docs with new examples and variable, guidance, etc. https://pjsmith.me.uk/index.php/docs/pjsprofilebars/general-feature-notes/algo-bars/
            add HASTRAPPEDSELLERS & HASTRAPPEDBUYERS to bar signals and make detectable via algobars conditions
            add minimum opacity setting for onbalance volume in data grid. This will overide the global minimum opacity if non-zero. Can be used to force full/fuller colours, vs shading for different values
            add support for DELTAIMBALANCEPERCENT[x] in algobars conditions
            hide experts tab by default when tabs shown